ARMET, a form of helmet which was developed out of exist ing forms in the latter part of the 15th century (diminutive of Fr. arme) . It was round in shape, and often had a narrow ridge or comb along the top. It had a pivoted or hinged vizor and nose-piece, and complete chin, neck and cheek protection, closely connected with the gorget. It was distinguished from the basinet by its roundness, and by the fact that it protected the neck and chin by strong plates, instead of a "camail" or loose collar of mail; from the salade and heaume by its close fit and skull-cap shape; and from the various forms of vizored burgonets by the absence of the projecting brim. It remained in use until the final abandon ment of the complete closed head-piece.