onion ring

Short definition from Wiktionary

Noun

1. 1
   A ring-shaped piece of onion formed from a way of cutting through the natural shell structure of the onion.
2. 2
   A food composed of onions cut into rings, that are then battered and deep-fried.
3. 3
   By extension, any thin/small ring-shaped deep-fried crispy dough with onion contained in it.