Someone staying in Cork? (7)
I believe the answer is:
stopper
'cork?' is the definition.
(cork is a kind of stopper)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for stopper that I've seen before include "Bung" , "Maybe cork" , "Perhaps cork" , "One blocks" , "Plug for a bottle" .)