Definition of “air” - Learner’s Dictionary


noun us uk /r/
GAS [ U ]

A2 the mixture of gases around the Earth that we breathe:

He went outside to get some fresh air (= clean, cool air).

More examples

the air

B2 the space above and around things:

He fired his gun into the air.

A2 travel in an aircraft:

I like travelling by air.
air safety
QUALITY [ no plural ]

a particular appearance or quality:

He has an air of authority.
be on air

to be broadcasting on television or radio

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