A woman who takes orders (3)
I believe the answer is:
nun
'a woman who takes orders' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for nun that I've seen before include "Woman in Holy Orders" , "A palindromic holy woman" , "whose son entered Promised Land" , "Letter" , "Member of religious order" .)