Kindergartener (4)
I believe the answer is:
tyke
'kindergartener' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tyke that I've seen before include "Small child or unpleasant person" , "Native of Yorkshire (informal)" , "Mischievous child" , "Uncouth child" , "Yorkshireman" .)