periderm /perˈi-dûrm/

1. The horny cuticular covering of a hydroid colony
2. The cork cambium with the cork and other tissues derived from it, forming a protective outer covering in plants

• for kicks
• forkier
• forkiest
• forkiness
• forkinesses
• forking
• forkit-tail
• forkit-tails
• fork-lift
• fork-lift truck
• fork-lift trucks
• fork lunch
• fork luncheon
• fork out
• fork over
• forks
• fork supper
• forktail
• fork-tailed
• forktails
• fork up
• forky
• forky-tail
• forlana
• forlanas