verb
snuffs; snuffed; snuffing
[+ obj] to cause (something, such as a candle or cigarette) to stop burning by pressing it with your fingers, covering it, etc.
informal
to cause the end of (something)
to kill (someone)
snuff it
Brit informal :to die
noun
[noncount] :a type of tobacco that is chewed, placed against the gums, or inhaled into the nose
up to snuff
US informal :good enough :as good as expected or wanted