Nomadic desert Arab (7)
I believe the answer is:
bedouin
'nomadic desert arab' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for bedouin that I've seen before include "Nomad of Jordan, for example" , "Wandering Arab of the Sahara" , "Arab nomadic peoples" , "I dub one (anag)" , "Desert wanderer" .)