The Collaborative International Dictionary of English v.0.48:

Compony \Com*po"ny\, Compon'e \Com*po"n['e]\, a. [F.
   compon['e].] (Her.)
   Divided into squares of alternate tinctures in a single row;
   -- said of any bearing; or, in the case of a bearing having
   curved lines, divided into patches of alternate colors
   following the curve. If there are two rows it is called
   counter-compony.
   [1913 Webster]