dim·ple 
(dĭmpəl)
(dĭmpəl)n.
1. A small natural indentation in the flesh on a part of the human body, especially in the cheek or on the chin.
2. A slight depression or indentation in a surface.
v. dim·pled, dim·pling, dim·ples
v.intr.
To form dimples by smiling.
v.tr.
To produce dimples in.
[Middle English dimpel.]
dimply adj.