Eg, queen or prince (5)
I believe the answer is:
royal
This clue is a double definition.
'eg queen' is the first definition.
(queen is a kind of royal)
'prince' is the second definition.
(prince is a type of royal)
(Other definitions for royal that I've seen before include "As kings and queens" , "What we may get used for individual" , "- blue; - assent" , "complete" , "One of Queen's family" .)