passegarde

from The Century Dictionary.

• noun In medieval armor, a ridge or projecting piece on the pauldrons or shoulderpieces, to ward off the blow of the lance. They first appear in the time of Henry VI. Also pasgarde, pass-guard.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Anc. Armor) A ridge or projecting edge on a shoulder piece to turn the blow of a lance or other weapon from the joint of the armor.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A ridge or projecting edge on a shoulder piece to turn the blow of a lance or other weapon from the joint of the armour.