Crossword Genius

Had food in school for the blind? (5)

Ross

I believe the answer is:

eaten

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'had' is the definition.
(I've seen this in another clue)

I don't understand how the rest of the clue works.

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(Other definitions for eaten that I've seen before include "Devoured" , "used for food" , "Gobbled" , "Put away" , "dined" .)

I've seen this clue in The Independent.
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