Source : Webster's Revised Unabridged Dictionary (1913)

Snort \Snort\, v. i. [imp. & p. p. {Snorted}; p. pr. & vb. n.
   {Snorting}.] [OE. snorten; akin to snoren. See {Snore}.]
   1. To force the air with violence through the nose, so as to
      make a noise, as do high-spirited horsed in prancing and
      play. --Fairfax.

   2. To snore. [R.] ``The snorting citizens.'' --Shak.

   3. To laugh out loudly. [Colloq.] --Halliwell.

Snort \Snort\, n.
   The act of snorting; the sound produced in snorting.

Snort \Snort\, v. t.
   To expel throught the nostrils with a snort; to utter with a
   snort. --Keats.

Source : WordNet®

snort
     n 1: a disrespectful laugh [syn: {snicker}, {snigger}]
     2: a cry or noise made to express displeasure or contempt [syn:
         {boo}, {hoot}, {Bronx cheer}, {hiss}, {raspberry}, {razzing},
         {bird}]
     v 1: indicate contempt by breathing noisily and forcefully
          through the nose; "she snorted her disapproval of the
          proposed bridegroom"
     2: make a snorting sound by exhaling hard; "The critic snorted
        contemtuously"
     3: inhale recreational drugs [syn: {huff}]
     4: inhale through the nose [syn: {take a hit}]
     5: ingest through the nose; "The drug addict was snorting
        cocaine every night"