Spirit of Arabian folklore (5)
I believe the answer is:
genie
'spirit of arabian folklore' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for genie that I've seen before include "Magical being who carries out a person's wishes" , "Spirit in a bottle" , "means of wishfulfilment" , "Magical servant" , "Obedient spirit of Arabian folklore" .)