It's discussed at the bar briefly - Peter's out with noblewomen? (6)
I believe the answer is:
ladies
'noblewomen?' is the definition.
('lady' can be a synonym of 'noblewoman')
'it's discussed at the bar briefly peter's out' is the wordplay.
I cannot quite understand how this works, but
'it's' could be 'es' ('e' can mean 'electronic' which is similar to 'IT') and 'es' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
'with' acts as a link.
Can you help me to learn more?
(Other definitions for ladies that I've seen before include "Well-mannered women" , "Ideals for genteel women" , "Convenience" , "...... and gentlemen" , "Females" .)