Meaning of “radio” - Learner’s Dictionary

radio

noun us uk /ˈreɪdiəʊ/
Extra Examples
This radio runs on batteries.A radio was playing in the background.Could you turn the radio down, please?Does this radio work?He fiddled with the wires to get the radio working again.
BROADCASTS [ C ]

A1 a piece of equipment used for listening to radio broadcasts:

a car radio
the radio

A1 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 ]

B1 a system of sending and receiving sound through the air:

local radio
a radio station
MESSAGES [ C ]

(Definition of “radio noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)