Casque

n.

1.

A piece of defensive or ornamental armor (with or without a vizor) for the head and neck; a helmet. His casque overshadowed with brilliant plumes. - Prescott.

Noun

1.

casque - (15-16th century) any armor for the head; usually ornate without a visor

body armor, body armour, casquet, casquetel, cataphract, coat of mail, helmet, suit of armor, suit of armour