Possessed some well-known editions (5)
I believe the answer is:
owned
'possessed' is the definition.
('own' can be a synonym of 'possess')
'some well-known editions' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'OWNED' can be found hidden inside 'well known editions'.
(Other definitions for owned that I've seen before include "Confessed" , "Had lawful title to" , "made a confession" , "to oneself?" , "Endow (anag)" .)