Definition of "onigiri"

The sprawling multipage menu offers cleanly executed dishes meant to accompany the sake, including standards like boiled edamame, and the filling rice balls called onigiri that you would expect at any izakaya, or Japanese pub.

2007 January 28, “Island Within an Island”, in New York Times‎

He cooks his breakfast of rice and misoshiru and packs onigiri rice balls for his lunch.

2009, Kiyo Sato, Kiyo's Story