1 [mass noun] the invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.
air regarded as necessary for breathing:the air was stalethe doctor told me to get some fresh air
the free or unconfined space above the surface of the earth:he celebrated by tossing his hat high in the air
[usually as modifier] referring to the use of aircraft:air travelall goods must come in by air
the earth’s atmosphere as a medium for transmitting radio waves:radio stations have successfully sold products over the air
one of the four elements in ancient and medieval philosophy and in astrology (considered essential to the nature of the signs of Gemini, Aquarius, and Libra): [as modifier]:an air sign
[count noun] a breeze or light wind.
2an impression of a quality or manner given by someone or something:she answered with a faint air of boredomhe leaned over with a confidential air
(airs) an annoyingly affected and condescending manner:he began to put on airs and think he could boss us around
3 Music a tune or short melodious song:traditional Scottish airs sung in the Gaelic tongue
4a jump off the ground on a snowboard or skateboard.
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Universal
1express (an opinion or grievance) publicly:a meeting in which long-standing grievances were aired
broadcast (a programme) on radio or television:the programmes were aired on India’s state TV network
archaic parade or show (something) ostentatiously:he took the opportunity of airing his knowledge of antiquity
2British expose (a room) to the open air in order to ventilate it:the window sashes were lifted regularly to air the room
warm (washed laundry) to remove dampness:I was airing the sheets
(air oneself) archaic go out in the fresh air:to go and air myself in my native fields
airs and graces
British derogatory an affectation of superiority:young master Tristan, with his fancy education and his airs and graces
in the air
felt by a number of people to be happening or about to happen:panic was in the airyou can tell there’s an election in the air
on (or off) the air
being (or not being) broadcast on radio or television:the wacky series has been on the air for ten years
take the air
go out of doors:I had a sudden feeling to get out and take the air
up in the air
(of a plan or issue) still to be settled; unresolved:the fate of the power station is up in the air
walk (or tread) on air
feel elated:most couples feel they are walking on air on their wedding day