rotula /rotˈū-lə/

1. The knee-cap (anatomy)
2. A radial piece of Aristotle's lantern in sea-urchins (zoology)

• catskins
• cat's-meat
• cat's-paw
• cat's-paws
• cat's-tail
• cat's-tails
• CAT standard
• cat-stick
• catsuit
• catsuits
• catsup
• catsups
• cat's-whisker
• cattabu
• cattabus
• cattalo
• cattaloes
• cattalos
• catted
• catted and fished
• catteries
• cattery
• cattier
• catties
• cattiest