also: かしこ
noun
oak flour; acorn flour
Flour made from acorns or oak nuts, primarily used as animal feed. The reading かしご is more common than かしこ.
樫粉は昔、家畜の飼料として使われていた。
Oak flour was once used as livestock feed.
この地域では樫粉を練って団子を作ることもある。
In this region, they sometimes knead oak flour to make dumplings.
Katakana spelling for the alternate reading かしこ.
どんぐり粉 is a more general term for acorn flour, while 樫粉 specifically refers to flour from the evergreen oak (樫).
Compound of 樫 (かし, 'evergreen oak') and 粉 (こ, 'flour'). The reading かしご is a rendaku form of かしこ.