Pointilitis

Pointilitis [pronouced point-ti-lai-tis]
noun

1.  A condition, often seen in babies between the age of 10 to 11 months, where they extend their little forefinger and start grunting with great insistence.  (Refer to Diagram 1)
2.  Pre-talkers clever (and adorable) way of getting their point (no pun intended) across.

Diagram 1

                                                                                                       Illustrations by Julianne Foo