exhaust definition

1. gases ejected from an engine as waste products
2. system consisting of the parts of an engine through which burned gases or steam are discharged
3. wear out completely
• examples: This kind of work exhausts me
• examples: I'm beat
• examples: He was all washed up after the exam
4. use up the whole supply of
• examples: We have exhausted the food supplies
5. eliminate (a substance)
• examples: combustion products are exhausted in the engine
• examples: the plant releases a gas