Child’s foot (7)
I believe the answer is:
tootsie
'child's foot' is the definition.
(childish term for a foot)
This is the entire clue.
(Other definitions for tootsie that I've seen before include "pretty girl" , "Foot or toe - I set, too (anag)" , "Foot (jocular)" , "What's furthest from a child's mind" , "A child's foot?" .)