A free woman (6)
I believe the answer is:
auntie
'woman' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'a free' is the wordplay.
'free' becomes 'untie' (I've seen this in another clue).
'a'+'untie'='AUNTIE'
Can you help me to learn more?
(Other definitions for auntie that I've seen before include "Close relative" , "BBC's nickname" , "Female relative" , "BBC nickname" , "Kinswoman" .)