Webster's Dictionary, 1913

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Bitterish adjective Somewhat bitter. Goldsmith.

Bitterling noun [ G.] (Zoology) A roachlike European fish ( Rhodima amarus ).

Bitterly adverb In a bitter manner.

Bittern noun [ Middle English bitoure , betore , bitter , from French butor ; of unknown origin.] (Zoology) A wading bird of the genus Botaurus , allied to the herons, of various species.

» The common European bittern is Botaurus stellaris . It makes, during the brooding season, a noise called by Dryden bumping, and by Goldsmith booming. The American bittern is B. lentiginosus , and is also called stake-driver and meadow hen . See Stake- driver .

The name is applied to other related birds, as the least bittern ( Ardetta exilis ), and the sun bittern .

Bittern noun [ From Bitter , adjective ]
1. The brine which remains in salt works after the salt is concreted, having a bitter taste from the chloride of magnesium which it contains.

2. A very bitter compound of quassia, cocculus Indicus, etc., used by fraudulent brewers in adulterating beer. Cooley.

Bitterness noun [ Anglo-Saxon biternys ; biter better + -nys = -ness .]
1. The quality or state of being bitter, sharp, or acrid, in either a literal or figurative sense; implacableness; resentfulness; severity; keenness of reproach or sarcasm; deep distress, grief, or vexation of mind.

The lip that curls with bitterness .
Percival.

I will complain in the bitterness of my soul.
Job vii. 11.

2. A state of extreme impiety or enmity to God.

Thou art in the gall of bitterness , and in the bond of iniquity.
Acts viii. 23.

3. Dangerous error, or schism, tending to draw persons to apostasy.

Looking diligently, . . . lest any root of bitterness springing up trouble you.
Hebrew xii. 15.

Bitternut noun (Botany) The swamp hickory ( Carya amara ). Its thin-shelled nuts are bitter.

Bitterroot noun (Botany) A plant ( Lewisia rediviva ) allied to the purslane, but with fleshy, farinaceous roots, growing in the mountains of Idaho, Montana, etc. It gives the name to the Bitter Root mountains and river. The Indians call both the plant and the river Spæt'lum .

Bitters noun plural A liquor, generally spirituous in which a bitter herb, leaf, or root is steeped.

Bittersweet adjective Sweet and then bitter or bitter and then sweet; esp. sweet with a bitter after taste; hence (Fig.), pleasant but painful.

Bittersweet noun
1. Anything which is bittersweet.

2. A kind of apple so called. Gower.

3. (Botany) (a) A climbing shrub, with oval coral-red berries ( Solanum dulcamara ); woody nightshade. The whole plant is poisonous, and has a taste at first sweetish and then bitter. The branches are the officinal dulcamara . (b) An American woody climber ( Celastrus scandens ), whose yellow capsules open late in autumn, and disclose the red aril which covers the seeds; -- also called Roxbury waxwork .

Bitterweed noun (Botany) A species of Ambrosia ( A. artemisiæfolia ); Roman worm wood. Gray.

Bitterwood noun A West Indian tree ( Picræna excelsa ) from the wood of which the bitter drug Jamaica quassia is obtained.

Bitterwort noun (Botany) The yellow gentian ( Gentiana lutea ), which has a very bitter taste.

Bittock noun [ See Bit a morsel.] A small bit of anything, of indefinite size or quantity; a short distance. [ Scot.] Sir W. Scott.

Bittor Bittour noun [ See Bittern ] (Zoology) The bittern. Dryden.

Bitts noun plural [ Confer French bitte , Icelandic biti , a beam. ...87.] (Nautical) A frame of two strong timbers fixed perpendicularly in the fore part of a ship, on which to fasten the cables as the ship rides at anchor, or in warping. Other bitts are used for belaying ( belaying bitts ), for sustaining the windlass ( carrick bitts , winch bitts , or windlass bitts ), to hold the pawls of the windlass ( pawl bitts ) etc.

Bitume noun [ French See Bitumen .] Bitumen. [ Poetic] May.

Bitumed adjective Smeared with bitumen. [ R.] "The hatches caulked and bitumed ." Shak.

Bitumen noun [ Latin bitumen : confer French bitume . Confer Béton .]
1. Mineral pitch; a black, tarry substance, burning with a bright flame; Jew's pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian Seas. It is used in cements, in the construction of pavements, etc. See Asphalt .

2. By extension, any one of the natural hydrocarbons, including the hard, solid, brittle varieties called asphalt, the semisolid maltha and mineral tars, the oily petroleums, and even the light, volatile naphthas.

Bitumen process (Photog.) Any process in which advantage is taken of the fact that prepared bitumen is rendered insoluble by exposure to light, as in photolithography.

Bituminate (bĭ*tū"mĭ*nāt) transitive verb [ imperfect & past participle Bituminated ; present participle & verbal noun Bituminating .] [ Latin bituminatus , past participle of bituminare to bituminate. See Bitumen .] To treat or impregnate with bitumen; to cement with bitumen. " Bituminated walls of Babylon." Feltham.

Bituminiferous adjective [ Bitumen + -ferous .] Producing bitumen. Kirwan.

Bituminization noun [ Confer French bituminisation .] The process of bituminizing. Mantell.

Bituminize transitive verb [ imperfect & past participle Bituminized ; present participle & verbal noun Bituminizing .] [ Confer French bituminiser .] To prepare, treat, impregnate, or coat with bitumen.

Bituminous adjective [ Latin bituminosus : confer French bitumineux .] Having the qualities of bitumen; compounded with bitumen; containing bitumen.

Near that bituminous lake where Sodom flamed.
Milton.

Bituminous coal , a kind of coal which yields, when heated, a considerable amount of volatile bituminous matter. It burns with a yellow smoky flame. -- Bituminous limestone , a mineral of a brown or black color, emitting an unpleasant smell when rubbed. That of Dalmatia is so charged with bitumen that it may be cut like soap. -- Bituminous shale , an argillaceous shale impregnated with bitumen, often accompanying coal.

Biuret noun [ Prefix bi- + urea .] (Chemistry) A white, crystalline, nitrogenous substance, C 2 O 2 N 3 H 5 , formed by heating urea. It is intermediate between urea and cyanuric acid.

Bivalency noun (Chemistry) The quality of being bivalent.

Bivalent adjective [ Latin bis twice + valens , present participle See Valence .] (Chemistry) Equivalent in combining or displacing power to two atoms of hydrogen; dyad.

Bivalve noun [ French bivalve ; bi- (L. bis ) + valve valve.]
1. (Zoology) A mollusk having a shell consisting of two lateral plates or valves joined together by an elastic ligament at the hinge, which is usually strengthened by prominences called teeth . The shell is closed by the contraction of two transverse muscles attached to the inner surface, as in the clam, -- or by one, as in the oyster. See Mollusca.

2. (Botany) A pericarp in which the seed case opens or splits into two parts or valves.

Bivalve adjective [ Prefix bi- + valve .] (Zoology & Bot.) Having two shells or valves which open and shut, as the oyster and certain seed vessels.

Bivalved adjective Having two valves, as the oyster and some seed pods; bivalve.

Bivalvous adjective Bivalvular.

Bivalvular adjective Having two valves.

Bivaulted adjective [ Prefix bi- + vault .] Having two vaults or arches.

Bivector noun [ Prefix bi- + vector .] (Math.) A term made up of the two parts ... + ...1 ...-1, where ... and ...1 are vectors.

Biventral adjective [ Prefix bi- + ventral .] (Anat.) Having two bellies or protuberances; as, a biventral , or digastric, muscle, or the biventral lobe of the cerebellum.

Bivial adjective Of or relating to the bivium.

Bivious adjective [ Latin bivius ; bis twice + via way.] Having, or leading, two ways.

Bivious theorems and Janus-faced doctrines.
Sir T. Browne.

Bivium noun [ Latin , a place with two ways. See Bivious .] (Zoology) One side of an echinoderm, including a pair of ambulacra, in distinction from the opposite side ( trivium ), which includes three ambulacra.

Bivouac noun [ French bivouac , bivac , prab. from German beiwache , or beiwacht ; bei by, near + wachen to watch, wache watch, guard. See By , and Watch .] (Mil.) (a) The watch of a whole army by night, when in danger of surprise or attack. (b) An encampment for the night without tents or covering.

Bivouac intransitive verb [ imperfect & past participle Bivouacked ; present participle & verbal noun Bivouacking .] (Mil.) (a) To watch at night or be on guard, as a whole army. (b) To encamp for the night without tents or covering.

Biweekly adjective [ Prefix bi- + weekly .] Occurring or appearing once every two weeks; fortnightly. -- noun A publication issued every two weeks. -- Bi"week"ly , adverb

Biwreye transitive verb To bewray; to reveal. [ Obsolete]

Bizantine See Byzantine .

Bizarre adjective [ French bizarre odd, from Spanish bizarro gallant, brave, liberal, probably of Basque origin; confer Basque bizarra beard, whence the meaning manly , brave .] Odd in manner or appearance; fantastic; whimsical; extravagant; grotesque. C. Kingsley.

Bizet noun [ Confer Bezel .] The upper faceted portion of a brilliant-cut diamond, which projects from the setting and occupies the zone between the girdle and the table. See Brilliant , noun

Blab transitive verb [ imperfect & past participle Blabbed ; present participle & verbal noun Blabbing .] [ Confer Middle English blaberen , or Danish blabbre , German plappern , Gael. blabaran a stammerer; probably of imitative origin. Confer also Blubber , v. ] To utter or tell unnecessarily, or in a thoughtless manner; to publish (secrets or trifles) without reserve or discretion. Udall.

And yonder a vile physician blabbing
The case of his patient.
Tennyson.

Blab intransitive verb To talk thoughtlessly or without discretion; to tattle; to tell tales.

She must burst or blab .
Dryden.

Blab noun [ Middle English blabbe .] One who blabs; a babbler; a telltale. "Avoided as a blab ." Milton.

For who will open himself to a blab or a babbler.
Bacon.