|Origin:||pirata, from Greek peirates, from peiran 'to attack'|
someone who sails on the seas, attacking other boats and stealing things from them [↪ piracy]
someone who dishonestly copies and sells another person's work [↪ piracy]:
Computer game pirates cost the industry twenty million pounds a year.
illegal radio or television broadcasts, or the station sending them out
—piratical adjective literary