Women who nurse women with habits? (7)
I believe the answer is:
sisters
'women' is the definition.
(sister is a kind of woman)
'nurse women with habits?' is the wordplay.
'nurse' becomes 'sister' (I've seen this before).
'women with habits?' becomes 's' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'sister'+'s'='SISTERS'
'who' is the link.
Can you help me to learn more?
(Other definitions for sisters that I've seen before include "Members of the family" , "Resists (anag)" , "Family relatives" , "Patient attention required from such" , "Nuns' titles" .)