plastron /plasˈtron/

1. A fencer's wadded breast-shield
2. The ventral section of the shell of a tortoise or turtle, or other animal
3. The front of a dress shirt
4. A separate ornamental front part of a woman's bodice
5. A steel breastplate worn under the hauberk (historical)

plasˈtral adjective

• fountained
• fountainhead
• fountainheads
• fountaining
• fountainless
• fountain pen
• fountain pens
• fountains
• fountful
• founts
• four
• four-ale
• fourball
• four bits
• four-by-four
• four-by-two
• fourchette
• fourchettes
• four-colour
• Fourcroya
• four-dimensional
• four-eyed fish
• four-eyes
• four-figure
• four-flush