Something illusory (6)

I believe the answer is:
mirage
(Other definitions for mirage that I've seen before include "unreal" , "French flier" , "fantasy" , "Deceptive image, in the desert say" , "Optical illusion, in a desert say" .)
I believe the answer is:
mirage
(Other definitions for mirage that I've seen before include "unreal" , "French flier" , "fantasy" , "Deceptive image, in the desert say" , "Optical illusion, in a desert say" .)