屈筋 くっきん Meanings Noun flexor (muscle) See also: 伸筋 (しんきん). Kanji 屈 bend. Read as クツ. 筋 muscle. Read as キン. Words containing 屈筋 屈筋腱 (くっきんけん) flexor tendon Word lists Anatomy Jinuma: Japanese Dictionary · Word lists