资料来源 : Webster's Revised Unabridged Dictionary (1913)

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.

   2. (Mus.) See {Polonaise}.