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

• signature tune
• signature tunes
• sign away
• signboard
• signboards
• signed
• signer
• signers
• signet
• signeted
• signeting
• signet ring
• signet rings
• signets
• signeur
• signeurie
• signeuries
• signieur
• signieurs
• signifiable
• significance
• significances
• significance test
• significance tests
• significancy