TROUGH n. 2 definitions
Any channel, receptacle, or depression, of a long and narrow shape; as, trough between two ridges, etc. 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.
ABATE v.
To be defeated, or come to naught; to fall through; to fail; as, a writ abates. To abate into a freehold, To abate in lands (Law), to enter into a freehold after the death of the last possessor, and before the heir takes possession. See Abatement, 4.