髓鞘 suǐqiào myelin sheath Definitions Defs Origin Strokes Stroke Words Sentences Sents 髓 suǐ noun marrow (bound form) bone marrow; tissue in the center of certain organs such as the spinal cord; pith or central tissue in plant stems鞘 qiào noun sheath scabbard or sheath; also used for sheath-like structures such as the protective outer wings of beetles or the covering of certain plant parts
