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.

Snuff \Snuff\, v. t.[Akin to D. snuffen, G. schnupfen,
   schnuppen, to snuff, schnupfen a cold in the head, schnuppen
   to snuff (air), also, to snuff (a candle). Cf. {Sniff},
   {Snout}, {Snub}, v. i.]
   1. To draw in, or to inhale, forcibly through the nose; to
      sniff.

            He snuffs the wind, his heels the sand excite.
                                                  --Dryden.

   2. To perceive by the nose; to scent; to smell.

Snuff \Snuff\, n. [Cf. G. schnuppe candle snuff, schnuppen to
   snuff a candle (see {Snuff}, v. t., to snuff a candle), or
   cf. {Snub}, v. t.]
   The part of a candle wick charred by the flame, whether
   burning or not.

         If the burning snuff happens to get out of the
         snuffers, you have a chance that it may fall into a
         dish of soup.                            --Swift.

Snuff \Snuff\, v. i.
   1. To inhale air through the nose with violence or with
      noise, as do dogs and horses. --Dryden.

   2. To turn up the nose and inhale air, as an expression of
      contempt; hence, to take offense.

            Do the enemies of the church rage and snuff? --Bp.
                                                  Hall.

Snuff \Snuff\, n.
   1. The act of snuffing; perception by snuffing; a sniff.

   2. Pulverized tobacco, etc., prepared to be taken into the
      nose; also, the amount taken at once.

   3. Resentment, displeasure, or contempt, expressed by a
      snuffing of the nose. [Obs.]

   {Snuff dipping}. See {Dipping}, n., 5.

   {Snuff taker}, one who uses snuff by inhaling it through the
      nose.

   {To take it in snuff}, to be angry or offended. --Shak.

   {Up to snuff}, not likely to be imposed upon; knowing; acute.
      [Slang]

Source : WordNet®

snuff
     adj : snuff colored; grayish to yellowish brown [syn: {snuff-brown},
            {mummy-brown}, {chukker-brown}]

snuff
     n 1: the charred portion of a candlewick
     2: a pinch of smokeless tobacco inhaled at a single time
     3: finely powdered tobacco for sniffing up the nose
     4: sensing an odor by inhaling through the nose [syn: {sniff}]

snuff
     v 1: sniff or smell inquiringly [syn: {snuffle}]
     2: inhale audibly through the nose; "snuff coke"