Dictionary entry overview: What does buccaneer mean? • BUCCANEER (noun) The noun BUCCANEER has 1 sense: 1. someone who robs at sea or plunders the land from the sea without having a commission from any sovereign nation Familiarity information: BUCCANEER used as a noun is very rare. • BUCCANEER (verb) The verb BUCCANEER has 1 sense: 1. live like a buccaneer Familiarity information: BUCCANEER used as a verb is very rare.