Source : Webster's Revised Unabridged Dictionary (1913)

Xebec \Xe"bec\ (z[=e]"b[e^]k), n. [Sp. jabegue, formerly spelt
   xabeque, or Pg. xabeco; both from Turk. sumbeki a kind of
   Asiatic ship; cf. Per. sumbuk, Ar. sumb[=u]k a small ship.]
   (Naut.)
   A small three-masted vessel, with projecting bow stern and
   convex decks, used in the Mediterranean for transporting
   merchandise, etc. It carries large square sails, or both.
   Xebecs were formerly armed and used by corsairs.