Crossword Genius

Creature of masses (3)

Ross

I believe the answer is:

ass

'creature' is the definition.
(term for a donkey)

'of masses' is the wordplay.
'of' indicates a hidden word.
'ASS' is hidden within 'masses'.

(Other definitions for ass that I've seen before include "Clinton's behind" , "Small hoofed animal" , "Stupid person or American bum" , "Long-eared animal" , "Idiotic animal" .)

I've seen this clue in The Mirror.
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