Bath  —n. (pl. -s) 1 a (usu. Plumbed-in) container for sitting in and washing the body. B its contents. 2 act of washing in it (have a bath). 3 (usu. In pl.) Public building with baths or a swimming-pool. 4 a vessel containing liquid for immersing something, e.g. A film for developing. B its contents. —v. 1 wash (esp. A baby) in a bath. 2 take a bath. [old english]