Soldier starts baking buffalo steak for May (5)

I believe the answer is:

gibbs

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'may' is the definition.
Both the answer and definition are singular nouns.
Maybe they are linked in a way I don't understand?

'soldier starts baking buffalo steak' is the wordplay.
'soldier' becomes 'GI' (GI can mean a US soldier).
'starts' indicates taking the first letters.
The initial letters of 'baking buffalo steak' is 'bbs'.
'gi'+'bbs'='GIBBS'

'for' is the link.

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I've seen this clue in the Sydney Morning Herald.

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