Surreal magazine about kingdom (5)
I believe the answer is:
realm
'kingdom' is the definition.
(kingdom is a type of country or realm)
'surreal magazine about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'REALM' is hidden in the letters of 'surreal magazine'.
(Other definitions for realm that I've seen before include "World" , "Peers are possessed by this" , "King's domain" , "Knowledge base" , "Kingdom's" .)