“Three letters in her hand, and three thousand dimples in her cheeks and chin!”
— Fanny Burney · 'Diary and letters of Madame d'Arblay' (1784)
dimple, n. 1. a. A small hollow or dent, permanent or evanescent, formed in the surface of some plump part of the human body, esp. in the cheeks in the act of smiling, and regarded as a pleasing feature.
