腰肌劳损 yāojīláosǔn lumbar muscle strain Origin Definitions Defs Strokes Stroke Words Sentences Sents 腰 yāo noun waist waist; the small of the back肌 jī noun muscle (bound form) muscle; flesh劳损 勞損 láosǔn strain to suffer damage or injury due to overexertion or wear and tear; a chronic physical strain