exhaust

Universal Words noun, verb noun 1 [U] waste gases that come out of a vehicle, an engine or a machine: car exhaust fumes / emissions 2 (also exhaust pipe) (also tailpipe especially in AmE) [C] a pipe through which exhaust gases come out: My car needs a new exhaust. verb [VN] 1 to make you feel very tired: Even a short walk exhausted her. * There's no need to exhaust yourself clearing up-we'll do it. 2 to use all of sth so that there is none left: Within three days they had exhausted their supply of food. * Don't give up until you have exhausted all the possibilities. 3 to talk about or study a subject until there is nothing else to say about it: I think we've exhausted that particular topic.