ETYM Old Eng. air, eir, French air, Latin aër, from Greek aer, air, mist, for aeier, from root ai to blow, breathe. Related to Aëry, Debonair, Malaria, Wind.
(Homonyms: err, heir).
1. A mixture of gases (especially oxygen) required for breathing.
2. The atmosphere; wind.
3. The region above the ground.
4. A distinctive but intangible quality surrounding a person or thing: SYN. aura, atmosphere.
5. A distinctive manner.
6. Medium for radio and television broadcasting; SYN. airwave.
7. (Archaic) The gaseous substance once thought to be one of four elements composing the universe.
Or air; 16th-century verse song with lute or guitar accompaniment, as in ‘It was a lover and his lass’ 1600 by Thomas Morley.