a small, natural hollow area or crease, permanent or transient, in some soft part of the human body, esp. one formed in the cheek in smiling.

any similar slight depression.

to mark with or as if with dimples; produce dimples in

A smile dimpled her face.

Metalworking .

to dent (a metal sheet) so as to permit use of bolts or rivets with countersunk heads.

to mark (a metal object) with a drill point as a guide for further drilling.

to form or show dimples.

noun

cleft , concavity , dent , depression , divot , hollow , pit