dimple
/ˈdɪmpl; `dɪmpl/ n
(a) small natural hollow in the chin or cheek (either permanent, or which appears eg when a person smiles) （下巴或脸颊上自然的）小窝, 酒窝, 靥.
(b) slight hollow on a surface (esp of glass or water) 浅凹（尤指玻璃表面的小坑或水面的波纹）. dimple, v [I, Tn]
(cause sth to) form dimples （使某物）出现酒窝, 形成浅坑, 起波纹
Her cheeks dimpled as she smiled. 她一笑, 脸上露出了酒窝.
The surface of the water was dimpled by the breeze. 轻风拂动水面, 荡起了涟漪.