\Clough\, n. [OE. clough, cloghe, clou, clewch, AS.
(assumed) cl[=o]h, akin to G. klinge ravine.]
1. A cleft in a hill; a ravine; a narrow valley. --Nares.
2. A sluice used in returning water to a channel after
   depositing its sediment on the flooded land. --Knight.

\Clough\ (?; 115), n. (Com.)
An allowance in weighing. See {Cloff}.