Iraqi city Arabs designed (5)
I believe the answer is:
basra
'iraqi city' is the definition.
(I've seen this in another clue)
'arabs designed' is the wordplay.
'designed' indicates anagramming the letters (designed with the letters).
'arabs' anagrammed gives 'BASRA'.
(Other definitions for basra that I've seen before include "Iraqi port on the Shatt-al-Arab waterway" , "Chief port of Iraq" , "City in Iraq" , "Iraq's main port" , "Iraqi town" .)