Edge of country accommodating a pupil in dormitory? (7)
I believe the answer is:
boarder
'pupil in dormitory?' is the definition.
'boarder' can be an answer for 'pupil' (boarder is a kind of pupil). I'm not certain of the 'in dormitory?' bit.
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for boarder that I've seen before include "pirate?" , "Lodger - invader of boat" , "Residential pupil" , "Attacker at sea possibly repelled" , "School liver-in" .)