Stop copper and dealer linking up (6)

I believe the answer is:

cutout

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'dealer linking up' is the definition.
I can't tell whether this defines the answer.

'stop copper' is the wordplay.
'stop' becomes 'cut' (cutting is a kind of stopping).
'copper' becomes 'out' (I can't justify this - if you can you should believe this answer much more).
'cut'+'out'='CUTOUT'

'and' is the link.

Can you help me to learn more?

I've seen this clue in The Irish Times.

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