English Dictionary

plastron

/ˈplæstɹən/

noun

The nearly flat part of the shell structure of a tortoise or other animal, similar in composition to the carapace. / (fencing) A half-jacket worn under the jacket for padding or for safety.

The turtle's plastron provides protection for its vulnerable underside.

意味（1）

The nearly flat part of the shell structure of a tortoise or other animal, similar in composition to the carapace.

意味（2）

(fencing) A half-jacket worn under the jacket for padding or for safety.

意味（3）

A man's shirt-bosom.

意味（4）

An ornamental front panel on a woman's bodice.

I bought here a wedding dress perhaps twenty or thirty years old … a sequin plastron to be worn over the womb as a feminine equivalent to a cod-piece, and a gauze veil embroidered in purple and gold.

意味（5）

A breastplate.

Why, compared to what thou wast, Hugo, thou art as a deerskin coat to a steel plastron.-- Art thou not in love, man? Answer me! "Something like, I fear me, beau sire,” replied the squire.

意味（6）

A film of air trapped by specialized hairs against the body of an aquatic insect, and which acts as an external gill.

The plastron of a diving beetle is not directly a source of oxygen, but acts as a gill, acquiring oxygen from the surrounding water.