The dots on a die are called "pips." People often just call them "dots," though. pip Pronunciation: (pip), [key] —n. 1. one of the spots on dice, playing cards, or dominoes. 2. each of the small segments into which the surface of a pineapple is divided. 3. Informal.metal insigne of rank on the shoulders of commissioned officers. 4. Hort. a. an individual rootstock of a plant, esp. of the lily of the valley. b. a portion of the rootstock or root of several other plants, as the peony. Read more: pip: meaning and definitions | Infoplease.com http://dictionary.infoplease.com/pip#ixzz2ePwHJ2zb

Something to pay attention to: one die, two dice. "A dice" is not logically possible.

One way to say it would be dimples. It is the same with golf balls.