rondelle

Etymology
From. .

Noun

 * 1) A small circular object.
 * 2) One of the successive crusts formed on molten metal as it cools.

Etymology
From.

Noun

 * 1)  hockey puck
 * 2) ring or annulus
 * 3) disk; washer
 * 4) onion ring
 * 5) slice
 * 6)  asshole anus