“Chin” 是一个名词，指的是 下巴，即位于下嘴唇下方的面部部分。它是人的面部特征之一，通常也可以在一些描述或表达中被用作象征某些特质，比如坚韧或决心。

示例句子：

1. She rested her chin on her hand while thinking.
   她在思考时把下巴搁在手上。
2. He has a strong chin, which gives him a confident appearance.
   他有一只坚毅的下巴，这使他看起来自信。
3. The child touched his chin as he tried to solve the puzzle.
   孩子在试图解谜时摸了摸下巴。
4. After the fall, he had a bruise on his chin.
   摔倒后，他的下巴上有一道淤伤。
5. She lifted her chin and looked straight ahead, determined to succeed.
   她抬起下巴，直视前方，决心要成功。

“Chin” 也可以在一些习语中出现，比如：

• Keep your chin up.（保持乐观，振作起来）
• Chin wag.（闲聊）