Definitions of air:

• noun:   a distinctive but intangible quality surrounding a person or thing

  Example: "An air of mystery"

• noun:   medium for radio and television broadcasting

  Example: "The program was on the air from 9 til midnight"

• noun:   the region above the ground

  Example: "Her hand stopped in mid air"

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

  Example: "Air pollution"

• noun:   once thought to be one of four elements composing the universe (Empedocles)
• noun:   the mass of air surrounding the Earth

  Example: "It was exposed to the air"

• noun:   travel via aircraft

  Example: "Air travel involves too much waiting in airports"

• noun:   a succession of notes forming a distinctive sequence

  Example: "She was humming an air from Beethoven"

• noun:   a slight wind (usually refreshing)

  Example: "As he waited he could feel the air on his neck"

• verb:   expose to warm or heated air, so as to dry

  Example: "Air linen"

• verb:   broadcast over the airwaves, as in radio or television

  Example: "We cannot air this X-rated song"

• verb:   be broadcast

  Example: "This show will air Saturdays at 2 P.M."

• verb:   expose to fresh air
• verb:   make public

  Example: "She aired her opinions on welfare"

• verb:   expose to cool or cold air so as to cool or freshen

  Example: "Air the old winter clothes"