PLASTRON

Definition of PLASTRON

  1. (noun)the ornamental front of a woman's bodice or shirt
  2. (noun)the front of man's dress shirt
  3. (noun)a metal breastplate that was worn under a coat of mail
  4. (noun)a large pad worn by a fencer to protect the chest
  5. (noun)(zoology) the part of a turtle's shell forming its underside