Woman in a convent (3)
I believe the answer is:
nun
'woman in a convent' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nun that I've seen before include "Woman in religious community" , "Religious woman, a palindrome" , "whose son entered Promised Land" , "Carmelite, for example" , "Sister of mercy" .)