galleon (n.) Look up galleon at Dictionary.com
large ship, 1520s, from Old French galion "little ship" (13c.), from Spanish galeón "galleon, armed merchant ship," from Byzantine Greek galea "galley" (see galley) + augmentative suffix -on. In English use, especially of Spanish ships involved in the American trade.
GALLEON. The accepted term for the type of ship which the Spaniards used in 1588; that is, an armed merchantman of exceptional quality, combining the strength of the mediaeval trader with some of the finer lines and fighting features of the GALLEY. [Sir Geoffrey Callender, "Sea Passages," 1943]