Name fit for a king? (3)
I believe the answer is:
rex
'name fit for a king?' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for rex that I've seen before include "King - Harrison?" , "Oedipus - -" , "Dog's name; king" , "Part of official title of a king" , "See 6" .)