Definition of troughs:
(n) :
A long, narrow container, open on top, for feeding or watering animals.
(n) :
Any similarly shaped container.
(n) :
(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.
(n) :
(Canada) A gutter under the eaves of a building; an eaves trough.
(n) :
(colloquial) An undivided metal urinal (plumbing fixture)
(n) :
A long, narrow depression between waves or ridges; the low portion of a wave cycle.