A pirate; a sea robber.

海贼；海盗。

Esp. one of the pirates who, during the 17th century, made raids on the Spaniards in the West Indies.

(尤指)十七世纪时，掠劫西印度群岛西班牙人的海盗。

An adventurer esp. in politics or business.

冒险者；(尤指)政治或商业上的冒险者。