to stub out:
to put a cigarette out (by pushing the remaining part of the cigarette on to a hard surface like an ash tray)
to extinguish:to put out
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~from BBC Learning Englis 6 minute English
to stub out:
to put a cigarette out (by pushing the remaining part of the cigarette on to a hard surface like an ash tray)
to extinguish:to put out
~~~
~from BBC Learning Englis 6 minute English