dimple
noun
[ ˈdɪmp(ə)l ]
• a small depression in the flesh, either one that exists permanently or one that forms in the cheeks when one smiles.
dimple
verb
• produce a dimple or dimples in the surface of.
• "rain began to fall, dimpling the water"
Origin:
Middle English: of Germanic origin; related to German Tümpel ‘pond’.