(1):

(n.) An iron breastplate, worn under the hauberk.

(2):

(n.) A trimming for the front of a woman's dress, made of a different material, and narrowing from the shoulders to the waist.

(3):

(n.) The ventral shield or shell of tortoises and turtles. See Testudinata.

(4):

(n.) A piece of leather stuffed or padded, worn by fencers to protect the breast.