Source : Webster's Revised Unabridged Dictionary (1913)

Snuff \Snuff\, v. t. [imp. & p. p. {Snuffed}; p. pr. & vb. n.
   {Snuffing}.] [OE. snuffen. See {Snuff} of a candle {Snuff} to
   sniff.]
   To crop the snuff of, as a candle; to take off the end of the
   snuff of.

   {To snuff out}, to extinguish by snuffing.