胸鎖乳突筋 きょうさにゅうとつきん Meanings Noun sternocleidomastoid muscle; sternomastoid Kanji 胸 chest. Read as キョウ. 鎖 chain 乳 milk. Read as ニュウ. 突 thrust. Read as トツ. 筋 muscle. Read as キン. Jinuma: Japanese Dictionary · Word lists