rotula /rotˈū-lə/

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

• bascules
• base
• baseball
• baseball cap
• baseball caps
• baseballer
• baseballers
• baseballs
• baseband
• baseboard
• baseboards
• baseborn
• base-burner
• base-burners
• base coin
• base coins
• base-court
• base-courts
• based
• baseej
• base fee
• base hospital
• base hospitals
• base jump
• base jumper