privateer/ˌpraɪvəˈtɪə(r); ˌpraɪvə`tɪr/ n(formerly) (captainof or sailor on a) ship used for attacking and robbing other ships; pirate (ship) （旧时）（用来攻击和劫掠其他船只的）私人武装船, 私掠船, 私掠船的船长或船员, 海盗（船）.
牛津英汉双解词典