Crossword Genius

Never-seen-before thing Beth Harmon might do in UK city (9)

Ross

I believe the answer is:

newcastle

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

'city' is the definition.
(Newcastle is an example)

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

Can you help me to learn more?

(Other definitions for newcastle that I've seen before include "Man City?" , "port for England" , "City on the Tyne" , "Tyneside city" , "town" .)

I've seen this clue in The Times.
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