noun
A traditional Japanese mortar, often a large wooden or stone device operated by foot or water power, used for hulling rice or pounding grains.
昔の農家では、唐臼で米をついていた。
In old farmhouses, they used a mortar to hull rice.
この資料館には江戸時代の唐臼が展示されている。
An Edo-period stamp mill is on display at this museum.