The Collaborative International Dictionary of English v.0.48:

Gourmet \Gour`met"\ (g[=oo]r`m[asl]"), n. [F.]
   A connoisseur in eating and drinking; an epicure.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gourmet
    n 1: a person devoted to refined sensuous enjoyment (especially
         good food and drink) [syn: epicure, gourmet,
         gastronome, bon vivant, epicurean, foodie]

Moby Thesaurus II by Grady Ward, 1.0:

71 Moby Thesaurus words for "gourmet":
   Brillat-Savarin, Cyrenaic, Heliogabalus, Lucullus, Sardanapalus,
   amateur, arbiter, arbiter elegantiarum, arbiter of taste,
   authority, board-and-roomer, boarder, bon vivant, cannibal,
   carnivore, carpet knight, cognoscente, collector, connaisseur,
   connoisseur, connoisseur of food, consumer, critic, dilettante,
   diner, diner-out, eater, eater-out, epicure, epicurean, expert,
   feeder, flesh-eater, fruitarian, gastronome, gastronomer,
   gastronomist, glutton, good judge, gourmand, grain-eater,
   graminivore, granivore, hedonist, herbivore, high liver,
   hungry mouth, judge, lactovegetarian, luncher, man-eater, maven,
   meat-eater, mouth, omnivore, omophagist, pantophagist, phytophage,
   picnicker, plant-eater, pleasure-seeker, predacean, refined palate,
   sensualist, sensuist, swine, sybarite, trencherman, vegetarian,
   virtuoso, voluptuary