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