Read Edit View history 蝶窦 diédòu sphenoidal sinus Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 蝶窦/ 蝶竇 diédòu sphenoidal sinus noun 蝶窦位于鼻腔后方，是鼻窦中位置最深的一个。 Edit Delete References Add reference No references for this word.