plastron

I had myself a great silver bowl, with two goblets, and a plastron of Spanish steel.

Frequently a metal breastplate or plastron-de-fer, and a steel cap or chapel-de-fer, were worn under the mail.

A square brown Derby is worn with this suit, brown English driving gloves, and a white plastron or coachman's scarf.

His chest, he thought, must burst under the strapped plastron, and sweat poured in a sheet across his eyes.

The anterior and posterior lobes of the plastron had been folded over the bridge, forming a three-ply thickness of bone.