Source : Webster's Revised Unabridged Dictionary (1913)

Overfeed \O`ver*feed"\, v. t. & i. [imp. & p. p. {Overfed}; p.
   pr. & vb. n. {Overfeeding}.]
   To feed to excess; to surfeit.

Source : WordNet®

overfeed
     v : feed excessively