Crossword Genius

Meat-filled snack in final section of reference work? (5)

Ross

I believe the answer is:

pasty

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'work?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

I cannot understand how the remainder of the clue works.

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(Other definitions for pasty that I've seen before include "Far from healthy-looking" , "Cornish pie" , "Cornish dish" , "food?" , "Savoury turnover" .)

I've seen this clue in The Times.
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