white, grey or black gas that is produced by something burning:
clouds of black smoke
Smoke from burning fields drifted across nearby roads.
the pall of smoke (=thick cloud of smoke) that hung over the city
wisp/puff of smoke (=a small amount of smoke)
Rangers watched from their fire towers for any wisps of smoke.
2 [countable usually singular]
an act of smoking a cigarette etc:
He went outside for a quiet smoke.
if something goes up in smoke, it burns so that it is completely destroyed:
The whole factory went up in smoke.
if a plan or some work goes up in smoke, it fails or you cannot continue with it:
We haven't worked this long just to see everything go up in smoke.
4 [countable] spokenDFTMDD
a cigarette or drugs that are smoked:
Where are the smokes, Jeff?
5 also where there's smoke there's fire spoken
used to say that if something bad is being said about someone, it is probably partly true
6 British English old-fashioned informal
London or any large town or city