肋軟骨 ろくなんこつ Meanings Noun costal cartilage Kanji 肋 rib. Read as ロク. 軟 supple. Read as ナン. 骨 bone. Read as コツ. Words containing 肋軟骨 肋軟骨炎 (ろくなんこつえん) costochondritis Word lists Anatomy Jinuma: Japanese Dictionary · Word lists