Crossword Genius

Optical illusion (6)

Ross

I believe the answer is:

mirage

'optical illusion' is the definition.
(mirage is a kind of optical illusion)

This is all the clue.

(Other definitions for mirage that I've seen before include "image, not what it seems" , "Hallucination caused by hot air" , "Deceptive image, in the desert say" , "Optical illusion, in a desert say" , "Illusory image" .)

I've seen this clue in The Telegraph, The Mirror, the Sydney Morning Herald and The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.