English definition of “radio”
BROADCASTS [C] › a piece of equipment used for listening to radio broadcasts: a car radio
the radio › the programmes that you hear when you listen to the radio: We heard him speaking on the radio this morning. I listen to the radio in the evening.
SYSTEM [U] › a system of sending and receiving sound through the air: local radio a radio station
MESSAGES [C] › a piece of equipment for sending and receiving messages by sound