To breathe out; to throw out the breath from the lungs; opposed to inspire. We expire air at every breath.

To exhale; to emit in minute particles, as a fluid or volatile matter. The earth expires a damp or warm vapor; the body expires fluid matter from the pores; plants expire odors.

To conclude.

To emit the last breath, as an animal; to die; to breathe the last.

To perish; to end; to fail or be destroyed; to come to nothing; to be frustrated. With the loss of battle all his hopes of empire expired.

To fly out; to be thrown out with force. The ponderous ball expires.

To come to an end; to cease; to terminate; to close or conclude, as a given period. A lease will expire on the first of May. The year expires on Monday. The contract will expire at Michaelmas. The days had not expired. When forty years had expired. Acts 7:30.