'Polacca' definitions:

Definition of 'Polacca'

From: GCIDE

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