About
The character 窦, traditionally written as 竇, is structured with the radical 穴 meaning "cave" or "hole" above the component 賣, which originally contributed both sound and the notion of passage or exchange. Etymologically, it referred specifically to a water drain or aperture, reflecting a concrete physical opening. Over time, its meaning extended to anatomical cavities such as the nasal sinuses, and it also came into use as a surname, while the character's form retained its association with the idea of a void or conduit.
Etymology Hide
Example Sentences Hide
窦老师今天来了。
我的好朋友姓窦。
他患有鼻窦炎。
鼻窦问题很难受。
窦房结是心脏的起搏点。
医生诊断他为窦性心动过速。
这个病例涉及上颌窦囊肿。
窦道造影用于检查瘘管。