nicker⁴ /nikˈər/

1. A clay marble (also knicker)
2. The round seed of a Caesalpinia (or Guilandina if this is considered a separate genus), used for playing marbles (also nickˈar)

• troublous
• troublously
• troublousness
• troublousnesses
• trou-de-loup
• trough
• trough fault
• trough faults
• troughing and peaking
• troughs
• trough shell
• trough shells
• troule
• trou-madame
• trounce
• trounced
• trouncer
• trouncers
• trounces
• trouncing
• trouncings
• troupe
• trouped
• trouper
• troupers