EXHAUST

I. verb Etymology: Latin ~us, past participle of exhaurire, from ex- + haurire to draw; akin to Middle High German œsen to empty, Greek auein to take Date: 1531 transitive verb 1. to consume entirely ; use up , to tire extremely or completely , to deprive of a valuable quality or constituent , 2. to draw off or let out completely, to empty by drawing off the contents, 3. to consider or discuss (a subject) thoroughly or completely, to try out the whole number of , intransitive verb discharge , empty , see: deplete ~er noun ~ibility noun ~ible adjective II. noun Date: 1848 1. the escape of used gas or vapor from an engine, the gas or vapor thus escaping, 2. the conduit through which used gases escape, an arrangement for removing fumes, dusts, or odors from an enclosure, ~ion