smok ‧ ing S2 /ˈsməʊkɪŋ $ ˈsmoʊk-/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ smoke , ↑ smoker ≠ ↑ non-smoker , ↑ smoking , ↑ smokiness ; adjective : ↑ smoked , smoking ≠ ↑ non-smoking , ↑ smoky , ↑ smokeless ; verb : ↑ smoke ]
the activity of breathing in tobacco smoke from a cigarette, pipe etc
stop/quit/give up smoking
I gave up smoking nearly ten years ago.
The sign says ‘No Smoking’.
a no smoking area
the risks of passive smoking (=breathing in smoke from other people’s cigarettes)