Source : Webster's Revised Unabridged Dictionary (1913)

Chamfron \Cham"fron\, n. [F. chanfrein.] (Anc. Armor)
   The frontlet, or head armor, of a horse. [Written also
   {champfrain} and {chamfrain}.]

Source : WordNet®

chamfron
     n : medieval plate armor to protect a horse's head [syn: {chanfron},
          {testiere}, {frontstall}, {front-stall}]