dimple
noun [ C ] uk/ˈdɪm.pəl/ us/ˈdɪm.pəl/
（尤指人面部的）酒窝;浅凹
a small hollow place, especially one that appears on a person's face when they smile
Freddie was an angelic-looking child with blond, curly hair, blue eyes, and dimples. 弗雷迪是一个有着天使般面孔的孩子，一头金色的卷发，蓝色的眼睛，还有一对小酒窝儿。
The pane of glass had a small dimple in it. 这面玻璃上有一个小坑。