sinus
🇺🇸
/ˈsaɪnəs/
🇬🇧
/ˈsaɪnəs/
noun
R
A sinus is an air-filled space in the skull that is connected to the nasal passages. It helps with things like breathing and speaking.
I have a headache because of my blocked sinuses.
我有頭痛，因為我的鼻竇堵塞了。
translation
鼻窦
詞形變化
Plural
sinuses