Arab leader hikes around (5)
I believe the answer is:
sheik
'arab leader' is the definition.
(I've seen this before)
'hikes around' is the wordplay.
'around' indicates an anagram.
'hikes' is an anagram of 'SHEIK'.
(Other definitions for sheik that I've seen before include "Leader of an Arab village or family" , "Arab leader -- hikes (anag)" , "Arab tribal head" , "A Sufi master" , "Arab chief" .)