rotula

Etymology
..

Noun

 * 1)  The patella; the kneecap.
 * 2)  One of the five radial pieces in the dentary apparatus of the sea urchin.

Etymology
.

Noun

 * 1)  patella, kneecap,

Etymology 1
From.

Noun

 * 1) a small wheel
 * 2) a scroll, a roll

Etymology 2
From ; the form is influenced by etymology 1. .

Noun

 * 1)  a rottol