WordNet (r) 3.0 (2006):

snifter
    n 1: a globular glass with a small top; used for serving brandy
         [syn: snifter, brandy snifter, brandy glass]

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "snifter":
   draft, dram, drench, drink, drop, gargle, guzzle, jigger, jolt,
   libation, nip, peg, potation, potion, pull, round, round of drinks,
   shot, sip, slug, snort, spot, suck, sup, swig, swill, tot, wet