Definition of "Air" :
noun: travel via aircraft
"Air travel involves too much waiting in airports."
noun: a distinctive but intangible quality surrounding a person or thing
"An air of mystery."
noun: medium for radio and television broadcasting
"The program was on the air from 9 til midnight."
noun: a succession of notes forming a distinctive sequence
"She was humming an air from Beethoven."
noun: the mass of air surrounding the Earth
"It was exposed to the air."
noun: the region above the ground
"Her hand stopped in mid air."
noun: a slight wind (usually refreshing)
"As he waited he could feel the air on his neck."
noun: a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
noun: once thought to be one of four elements composing the universe (Empedocles)
verb: expose to cool or cold air so as to cool or freshen
"Air the old winter clothes."
verb: expose to warm or heated air, so as to dry
verb: make public
"She aired her opinions on welfare."
verb: broadcast over the airwaves, as in radio or television
"We cannot air this X-rated song."
verb: be broadcast
"This show will air Saturdays at 2 P.M.."
verb: expose to fresh air