The Collaborative International Dictionary of English v.0.48:

Gluttony \Glut"ton*y\, n.; pl. Gluttonies. [OE. glotonie, OF.
   glotonie, gloutonnie.]
   Excess in eating; extravagant indulgence of the appetite for
   food; voracity.
   [1913 Webster]

         Their sumptuous gluttonies, and gorgeous feasts.
                                                  --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gluttony
    n 1: habitual eating to excess
    2: eating to excess (personified as one of the deadly sins)
       [syn: gluttony, overeating, gula]

Moby Thesaurus II by Grady Ward, 1.0:

148 Moby Thesaurus words for "gluttony":
   abandon, acedia, acquisitiveness, anger, appetite, avarice,
   avariciousness, avaritia, avidity, avidness, boundlessness,
   cannibalism, carnivorism, carnivority, carnivorousness, chewing,
   consumption, covetousness, crapulence, crapulency, crapulousness,
   cropping, cupidity, deadly sin, deglutition, devouring, devourment,
   dieting, dining, drunkenness, eating, edacity, egregiousness,
   enormousness, envy, epulation, exaggeration, excess, excessiveness,
   exorbitance, exorbitancy, extravagance, extravagancy, extreme,
   extremes, extremism, extremity, fabulousness, feasting, feeding,
   frenzy of desire, fury of desire, giantism, gigantism, gobbling,
   grasping, graspingness, grazing, greed, greediness, gula, gulosity,
   herbivorism, herbivority, herbivorousness, hoggishness, hunger,
   hyperbole, hypertrophy, immoderacy, immoderateness, immoderation,
   incontinence, indiscipline, indulgence, ingestion, inordinacy,
   inordinance, inordinate desire, inordinateness, insatiability,
   insatiable desire, intemperance, intemperateness, invidia, ira,
   itching palm, licking, lust, luxuria, manducation, mastication,
   messing, monstrousness, munching, nibbling, nimiety, nutrition,
   omnivorism, omnivorousness, omophagy, outrageousness,
   overdevelopment, overdoing, overeating, overgreatness,
   overgreediness, overgrowth, overindulgence, overlargeness,
   overmuch, overmuchness, pantophagy, pasture, pasturing, pecking,
   piggishness, pride, prodigality, radicalism, rapaciousness,
   rapacity, ravenousness, regalement, relishing, rumination,
   savoring, self-indulgence, sloth, sordidness, superbia,
   swinishness, tasting, too much, too-muchness, unconscionableness,
   unconstraint, uncontrol, undueness, unreasonableness,
   unrestrainedness, unrestraint, vegetarianism, voraciousness,
   voracity, wolfing, wolfishness, wrath