Webster's Dictionary, 1913

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Lumpsucker noun (Zoology) The lumpfish.

Lumpy adjective [ Compar. Lumpier ; superl. Lumpiest .] Full of lumps, or small compact masses.

Lumpy-jaw (Medicine) Actinomycosis. [ Colloq.]

Luna noun [ Latin ; akin to lucere to shine. See Light , noun , and confer Lune .]
1. The moon.

2. (Alchemy) Silver.

Luna cornea (Old Chem.) , horn silver, or fused silver chloride, a tough, brown, translucent mass; -- so called from its resemblance to horn. -- Luna moth (Zoology) , a very large and beautiful American moth ( Actias luna ). Its wings are delicate light green, with a stripe of purple along the front edge of the anterior wings, the other margins being edged with pale yellow. Each wing has a lunate spot surrounded by rings of light yellow, blue, and black. The caterpillar commonly feeds on the hickory, sassafras, and maple.

Lunacy noun ; plural Lunacies . [ See Lunatic .]
1. Insanity or madness; properly, the kind of insanity which is broken by intervals of reason, -- formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation. Brande. Burrill.

Your kindred shuns your house
As beaten hence by your strange lunacy .

2. A morbid suspension of good sense or judgment, as through fanaticism. Dr. H. More.

Syn. -- Derangement; craziness; mania. See Insanity .

Lunar (lū"nẽr) adjective [ Latin lunaris , from luna the moon. See Luna , and confer Lunary .]
1. Of or pertaining to the moon; as, lunar observations.

2. Resembling the moon; orbed. Dryden.

3. Measured by the revolutions of the moon; as, a lunar month.

4. Influenced by the moon, as in growth, character, or properties; as, lunar herbs. Bacon.

Lunar caustic (Med. Chem.) , silver nitrate prepared to be used as a cautery; -- so named because silver was called luna by the ancient alchemists. -- Lunar cycle . Same as Metonic cycle . See under Cycle . -- Lunar distance , the angular distance of the moon from the sun, a star, or a planet, employed for determining longitude by the lunar method . - - Lunar method , the method of finding a ship's longitude by comparing the local time of taking (by means of a sextant or circle) a given lunar distance, with the Greenwich time corresponding to the same distance as ascertained from a nautical almanac, the difference of these times being the longitude. -- Lunar month . See Month . -- Lunar observation , an observation of a lunar distance by means of a sextant or circle, with the altitudes of the bodies, and the time, for the purpose of computing the longitude. -- Lunar tables . (a) (Astron.) Tables of the moon's motions, arranged for computing the moon's true place at any time past or future. (b) (Navigation) Tables for correcting an observed lunar distance on account of refraction and parallax. -- Lunar year , the period of twelve lunar months, or 354 days, 8 hours, 48 minutes, and 34.38 seconds.

Lunar noun
1. (Astron.) A lunar distance.

2. (Anat.) The middle bone of the proximal series of the carpus; -- called also semilunar , and intermedium .

Lunarian noun [ See Lunar , Luna .] An inhabitant of the moon.

Lunary adjective [ Confer French lunaire . See Lunar .] Lunar. [ Obsolete] Fuller.

Lunary noun [ Confer French lunaire .] (Botany) (a) The herb moonwort or "honesty". (b) A low fleshy fern ( Botrychium Lunaria ) with lunate segments of the leaf or frond.

Lunate, Lunated adjective [ Latin lunatus crescent-shaped, past participle of lunare to bend like a crescent, from luna the moon.] Crescent-shaped; as, a lunate leaf; a lunate beak; a lunated cross. Gray.

Lunatic adjective [ French lunatique , Latin lunaticus , from luna the moon. See Lunar .]
1. Affected by lunacy; insane; mad.

Lord, have mercy on my son; for he is lunatic .
Wyclif (Matt. xvii. 15).

2. Of or pertaining to, or suitable for, an insane person; evincing lunacy; as, lunatic gibberish; a lunatic asylum.

Lunatic noun A person affected by lunacy; an insane person, esp. one who has lucid intervals; a madman; a person of unsound mind.

The lunatic , the lover, and the poet,
Are of imagination all compact.

Lunation noun [ Confer Lunated .] The period of a synodic revolution of the moon, or the time from one new moon to the next; varying in length, at different times, from about 29¼ to 29⅚ days, the average length being 29 d., 12h., 44m., 2.9s.

Lunch noun [ Of uncertain etymol. Confer Prov. Eng. nunc a lump.] A luncheon; specifically, a light repast between breakfast and dinner.

Lunch intransitive verb [ imperfect & past participle Lunched ; present participle & verbal noun Lunching .] To take luncheon. Smart.

Luncheon noun [ Prov. English luncheon , lunchion , lunshin , a large lump of food, from lunch . See Lunch .]

1. A lump of food. [ Prov. Eng.]

2. A portion of food taken at any time except at a regular meal; an informal or light repast, as between breakfast and dinner.

Luncheon intransitive verb To take luncheon. Beaconsfield.

Lune noun [ Latin luna moon: confer French lune . See Luna .]
1. Anything in the shape of a half moon. [ R.]

2. (Geom.) A figure in the form of a crescent, bounded by two intersecting arcs of circles.

3. A fit of lunacy or madness; a period of frenzy; a crazy or unreasonable freak. [ Obsolete]

These dangerous, unsafe lunes i' the king.

Lunet noun [ See Lunette .] A little moon or satellite. [ Obsolete] Bp. Hall.

Lunette noun [ French, dim. of lune moon, Latin luna . See Lune a crescent.]
1. (Fort.) A fieldwork consisting of two faces, forming a salient angle, and two parallel flanks. See Bastion .

2. (Far.) A half horseshoe, which wants the sponge.

3. A kind of watch crystal which is more than ordinarily flattened in the center; also, a species of convexoconcave lens for spectacles.

4. A piece of felt to cover the eye of a vicious horse.

5. (Architecture) Any surface of semicircular or segmental form; especially, the piece of wall between the curves of a vault and its springing line.

6. An iron shoe at the end of the stock of a gun carriage.

Lunette window (Architecture) , a window which fills or partly fills a lunette.

Lung (lŭng) noun [ Middle English lunge , Anglo-Saxon lunge , plural lungen ; akin to Dutch long , German lunge , Icelandic & Swedish lunga , Danish lunge , all probably from the root of English light . √125. See Light not heavy.] (Anat.) An organ for aërial respiration; -- commonly in the plural.

My lungs began to crow
like chanticleer.

» In all air-breathing vertebrates the lungs are developed from the ventral wall of the esophagus as a pouch which divides into two sacs. In amphibians and many reptiles the lungs retain very nearly this primitive saclike character, but in the higher forms the connection with the esophagus becomes elongated into the windpipe and the inner walls of the sacs become more and more divided, until, in the mammals, the air spaces become minutely divided into tubes ending in small air cells, in the walls of which the blood circulates in a fine network of capillaries. In mammals the lungs are more or less divided into lobes, and each lung occupies a separate cavity in the thorax. See Respiration .

Lung fever (Medicine) , pneumonia. -- Lung flower (Botany) , a species of gentian ( G. Pneumonanthe ). -- Lung lichen (Botany) , tree lungwort. See under Lungwort . -- Lung sac (Zoology) , one of the breathing organs of spiders and snails.

Lung-grown adjective (Medicine) Having lungs that adhere to the pleura.

Lunge noun [ Also spelt longe , from allonge . See Allonge , Long .] A sudden thrust or pass, as with a sword.

Lunge intransitive verb [ imperfect & past participle Lunged ; present participle & verbal noun Lunging .] To make a lunge.

Lunge transitive verb To cause to go round in a ring, as a horse, while holding his halter. Thackeray.

Lunge noun (Zoology) Same as Namaycush .

Lunged adjective Having lungs, or breathing organs similar to lungs.

Lungfish noun (Zoology) Any fish belonging to the Dipnoi; -- so called because they have both lungs and gills.

Lungie noun (Zoology) A guillemot. [ Written also longie .] [ Prov. Eng. & Scot.] Sir W. Scott.

Lungis noun [ Old French longis . See Lounge .] A lingerer; a dull, drowsy fellow. [ Obsolete]

Lungless adjective Being without lungs.

Lungoor noun [ Hind. langūr .] (Zoology) A long-tailed monkey ( Semnopithecus schislaceus ), from the mountainous districts of India.

Lungworm noun (Zoology) Any one of several species of parasitic nematoid worms which infest the lungs and air passages of cattle, sheep, and other animals, often proving fatal. The lungworm of cattle ( Strongylus micrurus ) and that of sheep ( S. filaria ) are the best known.

Lungwort noun (Botany) (a) An herb of the genus Pulmonaria ( P. officinalis ), of Europe; -- so called because the spotted appearance of the leaves resembles that of a diseased lung. (b) Any plant of the genus Mertensia (esp. M. Virginica and M. Sibirica ) plants nearly related to Pulmonaria . The American lungwort is Mertensia Virginica , Virginia cowslip. Gray.

Cow's lungwort mullein. -- Sea lungwort , Mertensia maritima , found on the seacoast of Northern Europe and America. -- Tree lungwort , a lichen ( Sticta pulmonacea ) growing on trees and rocks. The thallus is lacunose, and in appearance somewhat resembles the lungs, for diseases of which it was once thought a remedy.

Lunicurrent adjective [ Latin luna moon + English current .] Having relation to changes in currents that depend on the moon's phases. Bache.

Luniform adjective [ Latin luna moon + -form : confer French luniforme .] Resembling the moon in shape.

Lunisolar adjective [ Latin luna moon + English solar : confer French lunisolaire .] Resulting from the united action, or pertaining to the mutual relations, of the sun and moon.

Lunisolar precession (Astron.) , that portion of the annual precession of the equinoxes which depends on the joint action of the sun and moon. -- Lunisolar year , a period of time, at the end of which, in the Julian calendar, the new and full moons and the eclipses recur on the same days of the week and month and year as in the previous period. It consists of 532 common years, being the least common multiple of the numbers of years in the cycle of the sun and the cycle of the moon.

Lunistice noun [ Latin luna moon + sistere to cause to stand. Confer Solstice .] (Astron.) The farthest point of the moon's northing and southing, in its monthly revolution. [ Obsolete]

Lunitidal adjective Pertaining to tidal movements dependent on the moon. Bache.

Lunitidal interval . See Retard , noun

Lunt noun [ Dutch lont ; akin to Dan. & German lunte , Swedish lunta . Confer Link a torch.]
1. The match cord formerly used in firing cannon.

2. A puff of smoke. [ Scotch.] Burns.

Lunula noun ; plural Lunulæ . [ Latin , prop., a little moon. See Lunule .] (Anat. & Zoology) Same as Lunule .

Lunular adjective [ Confer French lunulaire . See Lunula .] (Botany) Having a form like that of the new moon; shaped like a crescent.

Lunulate, Lunulated adjective [ See Lunula .] (Bot. & Zoology) Resembling a small crescent. Gray.

Lunule noun [ French, from Latin lunula , dim. of luna moon.]
1. (Anat.) Anything crescent-shaped; a crescent-shaped part or mark; a lunula; a lune.

2. (Chemistry) A lune. See Lune .

3. (Zoology) (a) A small or narrow crescent. (b) A special area in front of the beak of many bivalve shells. It sometimes has the shape of a double crescent, but is oftener heart-shaped. See Illust. of Bivalve .

Lunulet noun [ Dim. of lunule .] (Zoology) A small spot, shaped like a half-moon or crescent; as, the lunulet on the wings of many insects.

Lunulite noun [ Lunule + -life : confer French lunulithe. See Lunula .] (Paleon.) Any bryozoan of the genus Lunulites , having a more or less circular form.

Luny adjective [ Shortened from lunatic .] Crazy; mentally unsound. [ Written also loony .] [ Low, U.S.]

Lupercal adjective Of or pertaining to the Lupercalia.

Lupercal noun A grotto on the Palatine Hill sacred to Lupercus , the Lycean Pan.