Red meat (4)

I think it could be either:

beef

lamb

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

This is the entire clue.

(Other definitions for beef that I've seen before include "Muscle; meat; grievance" , "Meat - complaint" , "Brawn; grumble" , "Complain; meat" , "Strength - grievance" .)

I've seen this clue in The Mirror, the King Feature Syndicate, The Sun and the Evening Standard.

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