Baby's shoe (6)
I believe the answer is:
bootee
'baby's shoe' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bootee that I've seen before include "Baby's sock-like shoe" , "A baby's knitted foot covering - sounds like loot" , "Infant's shoe." , "Soft, woolly baby's shoe" , "Jolly" .)