The Collaborative International Dictionary of English v.0.48:

Fourch'e \Four`ch['e]"\ (f[=oo]r`sh[asl]"), a. [F. See Fork.]
   (Her.)
   Having the ends forked or branched, and the ends of the
   branches terminating abruptly as if cut off; -- said of an
   ordinary, especially of a cross.
   [1913 Webster]