Polacca

n. [ It. polacca, polaccra, polacra; cf. F. polaque, polacre, Sp. polacre, ] [ Written also polacre. ] 1. (Naut.) A vessel with two or three masts, used in the Mediterranean. The masts are usually of one piece, and without tops, caps, or crosstrees. [ 1913 Webster ]

2. (Mus.) See Polonaise. [ 1913 Webster ]