蟠尾丝虫 pánwěisīchóng onchocerca volvulus Origin Definitions Defs Strokes Stroke Words Sentences Sents 蟠 pán noun to coil (bound form) to coil; to wind; to curl up尾 wěi noun tail (bound form) tail of an animal丝虫 絲蟲 sīchóng filaria A kind of parasitic worm with a thread-like body that lives in the tissues or blood of vertebrate animals; also known as a threadworm.