dimple
noun /ˈdɪmpl/
  /ˈdɪmpl/
 - a small hollow place in the skin, especially in the face 
- He has a little round dimple in one cheek.
 - She had a dimple which appeared when she smiled.
 
 - any small hollow place in a surface
- a pane of glass with a dimple pattern
 
 
Word OriginMiddle English: of Germanic origin; related to German Tümpel ‘pond’.