(1):
(n.) That which is expired; matter breathed forth; that which is produced by breathing out, as a sound.
(2):
(n.) A coming to a close; cessation; extinction; termination; end.
(3):
(n.) The last emission of breath; death.
(4):
(n.) The act of expiring
(5):
(n.) Emission of volatile matter; exhalation.
(6):
(n.) The act or process of breathing out, or forcing air from the lungs through the nose or mouth; as, respiration consists of inspiration and expiration; - opposed to inspiration.