Noun

(en noun)

A long, narrow container, open on top, for feeding or watering animals.

One of Hank's chores was to slop the pigs' trough each morning and evening.

Any similarly shaped container.

# (Australia, New Zealand) A rectangular container used for washing or rinsing clothes.

Ernest threw his paint brushes into a kind of trough he had fashioned from sheet metal that he kept in the sink.

A short, narrow canal designed to hold water until it drains or evaporates.

There was a small trough that the sump pump emptied into; it was filled with mosquito larvae.

(Canada) A gutter under the eaves of a building; an eaves trough.

The troughs were filled with leaves and needed clearing.

(agriculture, Australia, New Zealand) A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel.

A long, narrow depression between waves or ridges; the low portion of a wave cycle.

The buoy bobbed between the crests and troughs of the waves moving across the bay.

The neurologist pointed to a troubling trough in the pattern of his brain-waves.

(meteorology) A linear atmospheric depression associated with a weather front.

Noun

(en noun)

A bowl for washing, often affixed to a wall.

(geography) An area of land from which water drains into a specific river.

*{{quote-magazine, date=2012-01

, author=Douglas Larson , title=Runaway Devils Lake , volume=100, issue=1, page=46 , magazine= citation , passage=Devils Lake is where I began my career as a limnologist in 1964, studying the lake’s neotenic salamanders and chironomids, or midge flies. […] The Devils Lake Basin' is an endorheic, or closed, ' basin covering about 9,800 square kilometers in northeastern North Dakota.}}

(geography) A rock formation scooped out by water erosion.