Narrow parts in New England creeks (5)
I believe the answer is:
necks
'narrow parts' is the definition.
(I've seen this in another clue)
'new england creeks' is the wordplay.
'new' becomes 'n' (abbreviation as in New Testament NT).
'england' becomes 'E' (short for England).
'creeks' becomes 'cks' (I can't justify this - if you can you should give a lot more credence to this answer).
'n'+'e'+'cks'='NECKS'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for necks that I've seen before include "behaves amorously" , "Features of swans and giraffes" , "Drinks" , "Smooches" , "They connect head to body" .)