The Collaborative International Dictionary of English v.0.48:

Gavage \Ga`vage"\ (g[.a]`v[.a]zh"), n. [F., fr. gaver to gorge.]
   Forced feeding (as of poultry or infants) by means of a tube
   passed through the mouth down to the stomach.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

gavage
    n 1: feeding that consists of the delivery of a nutrient
         solution (as through a nasal tube) to someone who cannot or
         will not eat [syn: forced feeding, gavage]