Spirit of the lamp (5)
I believe the answer is:
genie
'spirit of the lamp' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for genie that I've seen before include "Arabian goblin with magic powers" , "Magician residing in a lamp" , "Arabian spirit as in Aladdin's lamp" , "Spirit in a bottle" , "means of wishfulfilment" .)