- a long, narrow, open container of wood, stone, etc. for holding water or food for animals: often used fig.
- any similarly shaped vessel, as one for kneading or washing something
- a channel for conveying fluids; esp., a gutter (noun)
- a long, narrow hollow or depression, as between waves
- a low in any cycle, esp. in an economic cycle
- a long, narrow area of low barometric pressure
Origin of troughMiddle English from Old English trog, akin to German from Indo-European an unverified form druk- from base an unverified form deru-, tree: basic sense, “hollowed wooden object”