Discuss prisoner having one ring between two wives (6)
I believe the answer is:
powwow
'discuss' is the definition.
(I know that powwow is a kind of discuss)
'prisoner having one ring between two wives' is the wordplay.
'prisoner' becomes 'pow' (prisoner of war).
'having' means one lot of letters goes inside another.
'one ring' becomes 'o' (letter resembling a ring).
'between two wives' becomes 'ww' (I am not sure about this - if you are sure you should believe this answer much more).
'o'+'ww'='oww'
'pow' placed around 'oww' is 'POWWOW'.
Can you help me to learn more?
(Other definitions for powwow that I've seen before include "(Native American) conference or meeting" , "Tribal conference" , "Meeting of Native Americans for discussion" , "Informal conference" , "Conference; Am. Ind. ceremony" .)