troughs
noun
Definitions
A long, narrow container, open on top, for feeding or watering animals.
Example: One of Hank's chores was to slop the pigs' trough each morning and evening.
Any similarly shaped container.
A short, narrow canal designed to hold water until it drains or evaporates.
Example: There was a small trough that the sump pump emptied into; it was filled with mosquito larvae.
A gutter under the eaves of a building; an eaves trough.
Example: The troughs were filled with leaves and needed clearing.