1. A word or phrase having a specific, precise meaning in a given specialty, apart from its general meaning in ordinary contexts. • Examples in law include and his heirs and res ipsa loquitur. [Cases: Contracts 152; Statutes 192. C.J.S. Contracts §§ 307, 318–322, 327, 331; Statutes§ 322.]
2. Loosely, a jargonistic word or phrase. — Also termed word of art.