椎 chinquapin, mallet, spine 12 strokes jōyō, taught in secondary school old JLPT 1 #1911 in newspapers Readings Onツイ、スイ Kunつち、う.つ In Chinese 椎 Words written with it 脊椎 せきつい spine 椎間板 ついかんばん intervertebral disk 腰椎 ようつい lumbar vertebra