The Collaborative International Dictionary
citizens' band \citizens' band\ n. that portion of the radio frequency spectrum allocated by the FCC for the use of individual citizens for short-distance personal or business use, from either fixed or mobile stations. Abreviated CB. Called also Citizens Radio Service.
Usage examples of "citizens' band".
But if you're going Citizens' Band on this trip, I think I'll deposit my two-meter rig in the safety vault here at the motel until we get back, along with my wallet and other valuables.
On the opposite side of the gun belt was another black leather case, from which Kendall extracted the Citizens' Band handheld transceiver he used in communicating with his chopper pilot.
The belt with the wire acted as an antenna, and the little radios operated like Citizens' Band radios, broadcasting for about half a mile.