n.[C]

1. 额头
2. 眉毛[P1]
3. 面容，表情
   Her brow was sad.

   她面露忧伤的神色。

4. 悬崖边缘，峭壁顶端[the S][（+of）]
5. 【口】智力水平

n.[C]

1. 【船】跳板；遮水楣
2. 【矿】井口；巷道

n.

1. a person's forehead.
2. an eyebrow.
3. the summit of a hill or pass.

n.