exhaust

1. (v) (transitive, literally, figuratively) To use up; to deplete, drain or expend wholly, or use until the supply comes to an end. 2. (v) (transitive) To tire out; to wear out; to cause to be without any energy. 3. (v) (transitive) To draw or let out wholly; to drain completely. 4. (v) (transitive) To empty by drawing or letting out the contents. 5. (v) (transitive) To discuss thoroughly or completely. 6. (v) (transitive) To expel (as exhaust). 7. (v) (intransitive) To discharge or escape (as exhaust). 8. (n) A system consisting of the parts of an engine through which burned gases or steam are discharged; see also exhaust system. 9. (n) The dirty air let out of a room through a register or pipe provided for the purpose. 10. (n) An exhaust pipe, especially on a motor vehicle. 11. (n) Exhaust gas. 12. (v) (transitive, chemistry) To subject to the action of various solvents in order to remove all soluble substances or extractives. 13. (n) The steam let out of a cylinder after it has done its work there. 14. (adj) (obsolete) Exhausted; used up.