Crossword Genius

Horses eat grass, I'm told (5)

Ross

I believe the answer is:

greys

'horses' is the definition.
(I know this)

'eat grass i'm told' is the wordplay.
'eat grass' becomes 'graze' (I've seen this before).
'i'm told' shows a homophone (sound like).
'graze' sounds like 'GREYS'.

(Other definitions for greys that I've seen before include "Horses" , "Colour combinations of black and white" .)

I've seen this clue in The Guardian.
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