Cleric from Aden? (4)
I believe the answer is:
dean
'cleric' is the definition.
(I've seen this before)
'from aden?' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'aden' is an anagram of 'DEAN'.
(Other definitions for dean that I've seen before include "Clergyman; narrow valley" , "Administrator of a university department" , "Small valley - cathedral dignitary" , "Senior academic administrator" , "Administrator of a college department" .)