Crossword Genius

A thousand donkeys? That's a lot (6)

Ross

I believe the answer is:

masses

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

'a thousand donkeys?' is the wordplay.
'a thousand' becomes 'm' (Roman numeral for a thousand).
'donkeys?' becomes 'asses' (an ass is a donkey).
'm'+'asses'='MASSES'

'that's' acts as a link.

(Other definitions for masses that I've seen before include "A lot" , "Crowds of common people" , "Large numbers or amounts" , "Loads" , "Great numbers, at religious ceremonies?" .)

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