窦道 dòudào sinus Definitions Defs Origin Strokes Stroke Words Sentences Sents dòudào sinus 窦 竇 dòu sinus (bound form) cavity or sinus in an organ or tissue道 dào noun channel channel; conduit; passage (e.g. for water, air, or biological fluids)dòudào subterranean passage 窦 竇 dòu hole (bound form) hole; aperture; opening道 dào noun road road; path; way
