exhaust >> ɪɡˈzɔːst
Definition: [verb] make (someone) feel very tired.
Example: her day out had exhausted her
Definition: [verb] use up (resources or reserves) completely.
Example: the country has exhausted its treasury reserves
Definition: [verb] expel (gas or steam) from or into a particular place.
Example: you should never exhaust bathroom air into your attic
Definition: [noun] waste gases or air expelled from an engine, turbine, or other machine in the course of its operation.
Example: buses spewing out black clouds of exhaust