Crossword Genius

Is she less than an eyeful? (4)

Ross

I believe the answer is:

iris

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'is she' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

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(Other definitions for iris that I've seen before include "Fleur-de-lis" , "Film about writer _______ Murdoch" , "--- Murdoch, author" , "Flowers in the eye?" , "Lily" .)

I've seen this clue in the Evening Standard.
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