plastron
- n the ornamental front of a woman's bodice or shirt
- n the front of man's dress shirt
- n a metal breastplate that was worn under a coat of mail
- n a large pad worn by a fencer to protect the chest
- n (zoology) the part of a turtle's shell forming its underside
- When the positive tip of one foil strikes the negatively charged plastron of an adversary, a gong rings, and a touch is marked up on the Stab Register.