The Collaborative International Dictionary of English v.0.48:

Begild \Be*gild"\, v. t. [imp. & p. p. Begilded or Begilt.]
   To gild. --B. Jonson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

begild
    v 1: decorate with, or as if with, gold leaf or liquid gold
         [syn: gild, begild, engild]