- 1 [uncountable] the grey, white or black gas that is produced by something burning cigarette smoke Clouds of thick black smoke billowed from the car's exhaust. See related entries: Waste and pollution
- 2 [countable, usually singular] (informal) an act of smoking a cigarette Are you coming outside for a smoke? See related entries: Addiction
- 3the Smoke [singular] (British English, informal) = big smoke Word Origin Old English smoca (noun), smocian (verb), from the Germanic base of smēocan
- 1to be completely burnt The whole house went up in smoke.
- 2if your plans, hopes, etc. go up in smoke, they fail completely Hopes of an early end to the dispute have gone up in smoke.
(saying) if something bad is being said about somebody/something, it usually has some truth in it (disapproving) a decision that people describe as being made in a smoke-filled room is made by a small group of people at a private meeting, rather than in an open and democratic way