noun
The powdery outer layer of rice grains removed during polishing; used in cooking, pickling, and as animal feed.
小糠をぬか漬けに使う。
I use rice bran for making nukazuke (rice bran pickles).
精米すると小糠が出る。
When you polish rice, rice bran is produced.
Compound of 小 (ko, 'small, fine') and 糠 (nuka, 'bran'), referring to the fine powder produced when polishing rice.