'Tired and emotional' oenophile given a little grape to classify (10)

I believe the answer is:

pigeonhole

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'classify' is the definition.
(pigeonholing is a kind of classifying)

I can't explain the rest of the clue.

(Other definitions for pigeonhole that I've seen before include "wherein one may put post" , "Recess in loft" , "Classify; bird's home" , "Categorise" .)

I've seen this clue in The Telegraph.

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