Crossword Genius

Something illuminating lid? (3-6)

Ross

I believe the answer is:

eye-opener

This clue is a double definition.

'something illuminating' is the first definition.
(something which enlightens or illuminates)

'lid?' is the second definition.
(an eyelid)

(Other definitions for eye-opener that I've seen before include "Something startling" , "Circumstances that brings surprise and enlightenment" , "Surprising fact - like wake up call" , "Fact that brings great surprise - wakes you up" , "Surprising fact or circumstance of ocular origin" .)

I've seen this clue in The Times.
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