In joint possession of punt, we went naked (7)
I believe the answer is:
between
'in joint possession of punt we went naked' is the definition.
I can't judge whether this definition defines the answer.
'punt we went naked' is the wordplay.
'punt' becomes 'bet' (punt can mean a bet).
'naked' says to take the centre (outside letters removed so centre is unclothed).
The centre of 'went' is 'en'.
'bet'+'we'+'en'='BETWEEN'
Can you help me to learn more?
(Other definitions for between that I've seen before include "In the intervening space" , "Been wet (anag.)" , "Flanked" , "Amongst" , "needle, not the smallest"" .)