2. Pertaining to steam, air, gas, etc, that is released from the cylinder of an engine after having preformed its work. Exhaust draught, a forced draught produced by drawing air through a place, as through a furnace, instead of blowing it through. Exhaust fan, a fan blower so arranged as to produce an exhaust draught, or to draw air or gas out of a place, as out of a room in ventilating it. Exhaust nozzle, exhaust orifice, a valve that lets exhaust steam escape out of a cylinder.
Origin: L. Exhaustus, p.p.
2. To empty by drawing or letting out the contents; as, to exhaust a well, or a treasury.
3. To drain, metaphorically; to use or expend wholly, or till the supply comes to an end; to deprive wholly of strength; to use up; to weary or tire out; to wear out; as, to exhaust one's strength, patience, or resources. A decrepit, exhausted old man at fifty-five. (Motley)
5. (Science: chemistry) to subject to the action of various solvents in order to remove all soluble substances or extractives; as, to exhaust a drug successively with water, alcohol, and ether. Exhausted receiver.
(Science: physics) see receiver.