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

• troublesome
• troublesomely
• troublesomeness
• troublesomenesses
• trouble someone for
• trouble spot
• trouble spots
• trouble-state
• trouble-states
• trouble-town
• trouble-towns
• trouble-world
• trouble-worlds
• troubling
• troublings
• troublous
• troublously
• troublousness
• troublousnesses
• trou-de-loup
• trough
• trough fault
• trough faults
• troughing and peaking
• troughs