[mass noun]the practice of attacking and robbing ships at sea 海盗行为,海上劫掠 ■a similar practice in other contexts, especially hijacking 抢劫行为,劫持行为;劫机 air piracy. 空中抢劫。 ■the unauthorized use or reproduction of another's work 盗版行为 software piracy. 软件盗版。
语源
mid 16th cent.: via medieval Latin from Greek pirateia, from peiratēs (see pirate)