usage: a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
2. air, region, part
usage: the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"
3. air, aura, atmosphere, quality
usage: a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
4. breeze, zephyr, gentle wind, air, wind, air current, current of air
usage: a slight wind (usually refreshing); "the breeze was cooled by the lake"; "as he waited he could feel the air on his neck"
5. atmosphere, air, region, part
usage: the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air"
6. air, element
usage: once thought to be one of four elements composing the universe (Empedocles)