n. 护胸, 胸铠, 胸甲, 胸饰

[医] 胸板(胸骨与肋软骨的合称), 腹甲(龟)

Plastron \Plas"tron\, n. [F. plastron breastplate, plastron, LL.
plastra a thin plate of metal. See {Plaster}.]
1. A piece of leather stuffed or padded, worn by fencers to
protect the breast. --Dryden.

3. (Anc. Armor) An iron breastplate, worn under the hauberk.

3. (Anat.) The ventral shield or shell of tortoises and
turtles. See {Testudinata}.

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