TROUGH

noun (plural ~s) see: tree Date: before 12th century 1. a long shallow often V-shaped receptacle for the drinking water or feed of domestic animals, any of various domestic or industrial containers, 2. a conduit, drain, or channel for water, a long and narrow or shallow channel or depression (as between waves or hills), the minimum point of a complete cycle of a periodic function: as, an elongated area of low barometric pressure, the low point in a business cycle