Meaning

noun a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of

verb expose to fresh air

noun the region above the ground

originFrom Middle English aire, from Old French air, from Latin āēr, from Ancient Greek ἀήρ (aḗr). Displaced native Old English lyft. More at lift, loft.

Etymology from Wiktionary, CC BY-SA 3.0