臼 うす Also written 碓, 碾, 舂 Meanings Noun millstone; mortar Kanji 臼 mortar. Read as うす. Words containing 臼 臼歯 (きゅうし) molar (tooth) 石臼 (いしうす) stone mortar 茶臼 (ちゃうす) tea grinding mortar (hand mill) And 9 more. Word lists Spoken Jinuma: Japanese Dictionary · Word lists