Crossword Genius

Put stop to drink in Irish city (4)

Ross

I believe the answer is:

cork

I'm a little stuck... Click here to teach me more about this clue!

'irish city' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for cork that I've seen before include "It's needed for a bottle of wine" , "Wine stopper" , "Irish county - bottle stopper" , "Stopper - Irish port" , "stop" .)

I've seen this clue in The Sun.
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