plastron

Meanings

1. 1
   noun The nearly flat part of the shell structure of a tortoise or other animal, similar in composition to the carapace.
2. 2
   noun A half-jacket worn under the jacket for padding or for safety.
3. 3
   noun A man's shirt-bosom.
4. 4
   noun An ornamental front panel on a woman's bodice.
5. 5
   noun A breastplate.
6. 6
   noun A film of air trapped by specialized hairs against the body of an aquatic insect, and which acts as an external gill.