
1) Animal feed container 2) Atmospheric dynamic 3) Cattle-feed basin 4) Channel 5) Crease 6) Depression 7) Drinking spot 8) Farm feeder 9) Groove 10) Gully 11) Gutter 12) Gutter under the eaves 13) Line 14) Livestock lunch site 15) Long depression 16) Long narrow container 17) Low-pressure zone 18) Natural depression
Found on
https://www.crosswordclues.com/clue/trough

1) Bunk 2) Channel 3) Chute 4) Concavity 5) Conduit 6) Cullis 7) Ditch 8) Drain 9) Gutter 10) Manger 11) Slideway
Found on
https://www.crosswordclues.com/clue/trough

An elongated area of low pressure at the surface or aloft.
Found on
http://ggweather.com/glossary.htm

In meteorology, an elongated area of relatively low atmospheric pressure; the opposite of a ridge.
Found on
http://nsidc.org/arcticmet/glossary/trough.html

• (n.) The transverse section of a cyclonic area where the barometric pressure, neither rising nor falling, has reached its lowest point. • (n.) Any channel, receptacle, or depression, of a long and narrow shape; as, trough between two ridges, etc. • (n.) A long, hollow vessel, generally for holding water or other liquid, especially ...
Found on
http://thinkexist.com/dictionary/meaning/trough/

The point in the business cycle when an economic contraction reaches its lowest level before turning up. Contrasts with peak.
Found on
http://www-personal.umich.edu/~alandear/glossary/t.html

1. A long, hollow vessel, generally for holding water or other liquid, especially one formed by excavating a log longitudinally on one side; a long tray; also, a wooden channel for conveying water, as to a mill wheel. ... 2. Any channel, receptacle, or depression, of a long and narrow shape; as, trough between two ridges, etc. Trough gutter, a rect...
Found on
http://www.encyclo.co.uk/local/20973

An elongated area of relatively low atmospheric pressure surface or aloft. Usually not associated with a closed circulation, and thus used to distinguish from a closed low. The opposite of ridge.
Found on
http://www.encyclo.co.uk/local/22268

The four times a year that the S&P futures contract expires at the same time as the S&P 100 index op
Found on
http://www.encyclo.co.uk/local/22402

An elongated low-pressure system that enhances showers into longer spells of rain or snow.
Found on
http://www.metcheck.com/OTHER/glossary.asp

An elongated area of low pressure in the atmosphere.
Found on
http://www.physicalgeography.net/physgeoglos/t.html

An elongated area of low atmospheric pressure.
Found on
http://www.stormfax.com/wxwords.htm

A warning issued when sustained winds of 39 to 73 mph (34 to 63 knots) are expected within 24 hours. In Canada, it is described as an elongated area of relatively low pressure extending from the centre of a region of low pressure.
Found on
http://www.timeanddate.com/weather/glossary.html

in meteorology, an elongated area of relatively low atmospheric pressure; the opposite of a ridge .
Found on
https://nsidc.org/cryosphere/glossary?page=27

A long linear depression.
Found on
https://pds.jpl.nasa.gov/planets/special/glossary.htm

A ditch or long shaped depression
Found on
https://sciencetrek.org/sciencetrek/topics/mountain_goats/glossary.cfm

The lowest part of a wave
Found on
https://sciencetrek.org/sciencetrek/topics/sound/glossary.cfm

A long and broad submarine DEPRESSION with gently sloping sides.
Found on
https://www.encyclo.co.uk/local/20127

A valley of a wave disturbance. See also: Crest, Peak to Peak Value, Wave.
Found on
https://www.encyclo.co.uk/local/20687

A valley of low atmospheric pressure, as opposed to a ridge of high pressure.
Found on
https://www.encyclo.co.uk/local/20784
noun a narrow depression (as in the earth or between ocean waves or in the ocean bed)
Found on
https://www.encyclo.co.uk/local/20974

An elongated area of relatively low atmospheric pressure. Also the lowest portion of a wave found between the wave crests.
Found on
https://www.encyclo.co.uk/local/21131

An elongated area of low pressure.
Found on
https://www.encyclo.co.uk/local/22280

Ruts, or a deep path through the moguls.
Found on
https://www.nbcolympics.com/news/freestyle-skiing-101-glossary
[Literary terms] a container from which cattle or horses feed
Found on
https://www.vocabulary.com/lists/2425805
No exact match found.