Crossword Genius

It comes to light, naturally (4)

Ross

I believe the answer is:

moth

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'it comes to light' is the definition.
(I've seen this in another clue)

I don't understand the remainder of the clue.

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(Other definitions for moth that I've seen before include "Usually nocturnal insect" , "Insect of the order lepidoptera" , "One of 5 [FAIRIES]" , "Insect; MND fairy" , "Night flying insect" .)

I've seen this clue in the Evening Standard.
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