a piece of plate armor for the upper part of the torso in front.
Fencing. a quilted pad worn over part of the torso, for protection.
an ornamental front piece of a woman's bodice.
the starched front of a shirt.
Zoology. the ventral part of the shell of a turtle.
< Middle French
< Italian piastrone,
augmentative of piastra
metal plate, piaster.