Trough

n.	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.
	3.	(Meteor.) The transverse section of a cyclonic area where the barometric pressure, neither rising nor falling, has reached its lowest point. Trough gutter (Arch.) a rectangular or V-shaped gutter, usually hung below the eaves of a house. Trough of the sea the depression between two waves.

Noun	1.	trough - a narrow depression (as in the earth or between ocean waves or in the ocean bed)
	2.	trough - a channel along the eaves or on the roof; collects and carries away rainwater Synonyms: gutter
	3.	trough - a concave shape with an open top Synonyms: bowl
	4.	trough - a treasury for government funds Synonyms: public treasury, till
	5.	trough - a long narrow shallow receptacle
	6.	trough - a container (usually in a barn or stable) from which cattle or horses feed Synonyms: manger

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