rotula /rotˈū-lə/

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

• finger's-end
• fingerstall
• fingerstalls
• fingertip
• fingertips
• finger wave
• finger waves
• fini
• finial
• finials
• finical
• finicalities
• finicality
• finically
• finicalness
• finicalnesses
• finicketier
• interdigital
• interdigitate
• interdigitated
• interdigitates
• interdigitating
• interdigitation
• interdine
• interdined