glutton

Short definition from Wiktionary

Adjective

1. 1
   Gluttonous; greedy; gormandizing.

Noun

1. 1
   One who eats voraciously, obsessively, or to excess; a gormandizer.
2. 2
   One who consumes anything voraciously, obsessively, or to excess.
3. 3
   The wolverine, Gulo gulo.
4. 4
   A giant petrel.

Verb

1. 1
   To glut; to satisfy (especially an appetite) by filling to capacity.
2. 2
   To glut; to eat voraciously.