Toy to wind with silver key inserted (3,4)
I believe the answer is:
rag doll
'toy' is the definition.
(I know that rag doll is a type of doll)
'wind with silver key inserted' is the wordplay.
I cannot really see how this works, but
'silver' could be 'ag' (Ag is the chemical symbol for silver) and 'ag' is found in the answer.
'key' could be 'd' (musical key) and 'd' is present in the answer.
'wind' could be 'roll' (synonyms) and 'roll' is found in the leftover letters.
This accounts for all the letters.
This explanation may well be incorrect...
'to' acts as a link.
(Other definitions for rag doll that I've seen before include "Page 3 cutie?" , "'Small cloth replica of a person (3,4)'" , "Child's toy" , "suitable gift for little girl" , "plaything's required" .)