Something for a Yorkshireman opening for Spooner? (4,3)

I believe the answer is:

flat cap

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

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for flat cap that I've seen before include "Style of headgear" , "> lid" , "working-class symbol" , "Headgear (of the working class?)" , "Type of hat" .)

I've seen this clue in The Guardian.

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