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 come to an end; terminate: My membership in the club has expired.
- To breathe one's last breath; die: The patient expired early this morning.
- To exhale; breathe out.
- To breathe (something) out.
- Archaic To give (something) off.