1. a device providing a connection between a power source and a user (Freq. 1) - some campsites have electrical hookups for trailers • Derivationally related forms: hook up • Hypernyms: connection, connexion, connector, connecter, connective 2. a system of components assembled together for a particular purpose • Syn: assemblage • Derivationally related forms: assemble (for: assemblage), hook up • Hypernyms: system