Po*lac"ca (?), 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.
2. Mus.
See Polonaise.
© Webster 1913.