Source : Webster's Revised Unabridged Dictionary (1913)

Overeat \O`ver*eat"\, v. t. & i.
   1. To gnaw all over, or on all sides. [Obs.] --Shak.

   2. To eat to excess; -- often with a reflexive.

Source : WordNet®

overeat
     v : overeat or eat immodestly; make a pig of oneself; "She
         stuffed herself at the dinner"; "The kids binged on
         icecream" [syn: {gorge}, {ingurgitate}, {overindulge}, {glut},
          {englut}, {stuff}, {engorge}, {overgorge}, {gormandize},
          {gormandise}, {gourmandize}, {binge}, {pig out}, {satiate},
          {scarf out}]