腰筋 ようきん Meanings Noun psoas Kanji 腰 waist. Read as ヨウ. 筋 muscle. Read as キン. Words containing 腰筋 大腰筋 (だいようきん) psoas major muscle 小腰筋 (しょうようきん) psoas minor muscle Word lists Anatomy Jinuma: Japanese Dictionary · Word lists