| Noun | 1. | hookup - a device providing a connection between a power source and a user; "some campsites have electrical hookups for trailers"connecter, connector, connective, connection, connexion - an instrumentality that connects; "he soldered the connection"; "he didn't have the right connector between the amplifier and the speakers" |
| 2. | hookup - a system of components assembled together for a particular purposesystem - instrumentality that combines interrelated interacting artifacts designed to work as a coherent entity; "he bought a new stereo system"; "the system consists of a motor and a small computer" |