Discussion about female in Hackney (6)
I believe the answer is:
confab
'discussion' is the definition.
(I have seen 'Informal discussion ' mean 'confab' so perhaps 'discussion' could also mean 'confab')
'about female in hackney' is the wordplay.
'about' becomes 'on' (**).
'female' becomes 'f' (abbreviation).
'in' is an insertion indicator.
'hackney' becomes 'cab' (I've seen this before).
'on'+'f'='onf'
'onf' going inside 'cab' is 'CONFAB'.
(Other definitions for confab that I've seen before include "Talk informally" , "casual conversation" , "Exchange" , "Chatter" , "jaw" .)