exhaust

(noun) gases ejected from an engine as waste products. Synonyms: exhaust fumes, fumes.

(noun) system consisting of the parts of an engine through which burned gases or steam are discharged. Synonyms: exhaust system.

(verb) wear out completely. Synonyms: wash up, beat, tucker, tucker out. Examples: "This kind of work exhausts me." "I'm beat." "He was all washed up after the exam."

(verb) use up (resources or materials). Synonyms: consume, eat up, use up, eat, deplete, run through, wipe out. Examples: "This car consumes a lot of gas." "We exhausted our savings." "They run through 20 bottles of wine a week."

(verb) deplete. Synonyms: run down, play out, sap, tire. Examples: "Exhaust one's savings." "We quickly played out our strength."

(verb) use up the whole supply of. Example: "We have exhausted the food supplies."

(verb) eliminate (a substance). Synonyms: discharge, expel, eject, release. Examples: "Combustion products are exhausted in the engine." "The plant releases a gas."