1. A metal breastplate that was worn under a coat of mail
   "The knight's plastron provided an extra layer of protection in battle"
    
2. A large pad worn by a fencer to protect the chest
   "The fencer adjusted his plastron before putting on his jacket"
    
3. The front of man's dress shirt
   "He carefully ironed the plastron of his dinner jacket shirt"
    
4. The ornamental front of a woman's bodice or shirt
   "The intricate lace plastron added elegance to her blouse"
    
5. (zoology) the part of a turtle's shell forming its underside
   "The turtle's plastron was a pale yellow colour"

Derived forms: plastrons

Type of: aegis, breastplate, egis [N. Amer], exoskeleton, pad, shirtfront

Part of: bodice, dress shirt, evening shirt, turtle

Encyclopedia: Plastron