Overprotect girl in New York (5)
I believe the answer is:
nanny
'overprotect girl in new york' is the definition.
I can't tell whether this definition defines the answer.
'girl in new york' is the wordplay.
'girl' becomes 'Ann' (woman's name).
'in' means one lot of letters goes inside another.
'new york' becomes 'ny'.
'ann' going into 'ny' is 'NANNY'.
Can you help me to learn more?
(Other definitions for nanny that I've seen before include "Issue tender" , "eg Mary Poppins" , "Spoon-feed" , "Child minder - goat - grandma" , "Posh child minder or female goat" .)