背筋で始まる言葉

せすじ【背筋】

the muscles along the spine背筋が痛むI have a pain in my back.背筋を伸ばしたHe straightened his back.気味の悪い話を聞...

はいきんりょく【背筋力】

strength in one's back背筋力が強いHe has a strong back.