Cast of Cats, say? (7)

I believe the answer is:

anagram

'cast of cats say?' is the definition.
('cast' is an anagram of 'cats')

This is all the clue.

(Other definitions for anagram that I've seen before include "Word rearranging another's letters" , "pouring the tea?" , "Clue about a ragman?" , "Jumble of letters" , "New arrangement" .)

I've seen this clue in The Guardian.

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