from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Buckwheat groats.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A porridge made from boiled buckwheat groats, or sometimes from other cereal groats.
Russian, from Old Russian.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Russian каша (kaša, "porridge, gruel") or Yiddish קאַשע (kashe). (Wiktionary)