Broad″bill′ (�), n. 1. (Zoöl.) A wild duck (Aythya, orFuligula, marila), which appears in large numbers on the eastern coast of the United States, in autumn; — called also bluebill, blackhead, raft duck, and scaup duck. See Scaup duck.
2. (Zoöl.) The shoveler. See Shoveler.