stone hand mill
A traditional stone mill, often used for grinding grains or beans by hand. The term is specific and may be encountered in historical or culinary contexts.
My grandmother used a stone hand mill to grind soybeans into kinako.
The term 厚臼 combines 厚 (thick) and 臼 (mortar/mill), likely referring to a sturdy, thick stone mill. The exact historical derivation is uncertain.