Collins COBUILD Advanced Learner's English Dictionary - airwaves

also air waves 1. The airwaves is used to refer to the activity of broadcasting on radio and television. For example, if someone says something over the airwaves, they say it on the radio or television. (JOURNALISM) The election campaign has been fought not in street rallies but on the airwaves... N-PLURAL: usu the N 2. Airwaves are the radio waves which are used in radio and television broadcasting. N-PLURAL