A free broadcaster (6)
I believe the answer is:
auntie
'broadcaster' is the definition.
The definition and answer can be both people as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'a free' is the wordplay.
'free' becomes 'untie' (I've seen this before).
'a'+'untie'='AUNTIE'
Can you help me to learn more?
(Other definitions for auntie that I've seen before include "Relation; the BBC" , "Unite a strange family member" , "Kinswoman" , "Female relative" , "Name for BBC" .)