To breathe out; to emit from the lungs; to throw out from the mouth or nostrils in the process of respiration; -- opposed to inspire.

To give forth insensibly or gently, as a fluid or vapor; to emit in minute particles; to exhale; as, the earth expires a damp vapor; plants expire odors.

To emit; to give out.

To emit the breath.

To burst forth; to fly out with a blast.

expel air; "Exhale when you lift the weight"