Definition of "exhaust" in English

verb

1. (transitive) To draw or let out wholly; to drain completely.

   • The water was exhausted out of the well.
   • Moisture of the earth is exhausted by evaporation.

2. (transitive) To empty by drawing or letting out the contents.

   • to exhaust a well
   • to exhaust a treasury

3. (transitive, literally, figuratively) To use up; to deplete, drain or expend wholly, or use until the supply comes to an end.

   • My grandfather seemingly never exhausts his supply of bad jokes.
   • to exhaust one's resources
   • to exhaust all possibilities
   • You're exhausting my patience.
   • I exhausted my strength walking up the hill.

4. (transitive) To tire out; to wear out; to cause to be without any energy.

   • The marathon exhausted me.

5. (transitive) To discuss thoroughly or completely.

   • That subject has already been exhausted.

6. (transitive, chemistry) To subject to the action of various solvents in order to remove all soluble substances or extractives.

   • to exhaust a drug successively with water, alcohol, and ether

7. (transitive) To expel (as exhaust).

8. (intransitive) To discharge or escape (as exhaust).

noun

1. A system consisting of the parts of an engine through which burned gases or steam are discharged; see also exhaust system.

2. The steam let out of a cylinder after it has done its work there.

3. The dirty air let out of a room through a register or pipe provided for the purpose.

4. An exhaust pipe, especially on a motor vehicle.

5. Exhaust gas.

adjective

1. (obsolete) Exhausted; used up.