Home for some Irish stopper (4)

I believe the answer is:

cork

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'stopper' is the definition.
(I know that stopper can be written as cork)

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

Can you help me to learn more?

(Other definitions for cork that I've seen before include "Type of bark; seal" , "Float" , "Tree used in bottling" , "Stopper; Irish city" , "Irish port - something in a wine bottle?" .)

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

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