D defs.my
Entry 3 senses Webster, 1913

Piracy

/(pī"rȧ*sy̆)/ · Pi·ra·cy · IPA /ˈpaɪɹəsi/
01 n. The act or crime of a pirate.
pl. Piracies ((-sĭz))
  1. 1.
    The act or crime of a pirate.
  2. 2.
    Robbery on the high seas; the taking of property from others on the open sea by open violence; without lawful authority, and with intent to steal; -- a crime answering to robbery on land.(Common Law)
  3. 3.
    “Sometimes used, in a quasi-figurative sense, of violation of copyright; but for this, infringement is the correct and preferable term.”