Queen possibly conceals problem, leading to gossip (8)
I believe the answer is:
chitchat
'gossip' is the definition.
('chitchat' can be a synonym of 'gossip')
'queen possibly conceals problem' is the wordplay.
'queen possibly' becomes 'cat' (queen is a kind of cat).
'conceals' indicates putting letters inside.
'problem' becomes 'hitch' (I've seen this before).
'cat' going around 'hitch' is 'CHITCHAT'.
'leading to' acts as a link.
(Other definitions for chitchat that I've seen before include "Gossip" , "Informal talk" , "Idle talk" , "Light social conversation" , "Idle nattering" .)