Definition of: pirate

(pī′rit) noun
1. A rover and robber on the high seas.
2. A vessel engaged in piracy.
3. A person who appropriates without right the work of another. See synonyms under ROBBER.
—v.t. & v.i. ·rat·ed, ·rat·ing
1. To practice or commit piracy (upon).
2. To publish or appropriate (the work, ideas, etc., of another) wrongfully or illegally; plagiarize. [<L pirata <Gk. peiratēs <peiraein attack]
—pi·rat·ic (pī·rat′ik) or ·i·cal adjective
—pi·rat′i·cal·ly adverb