The Collaborative International Dictionary of English v.0.48:

Gluttonize \Glut"ton*ize\, v. i. [imp. & p. p. Gluttonized; p.
   pr. & vb. n. Gluttonizing.]
   To eat to excess; to eat voraciously; to gormandize.
   --Hallywell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

gluttonize
    v 1: eat a lot and without restraint [syn: gluttonize,
         gluttonise, fress]