Crossword Genius

Tough dragon maybe accommodating British, not northern (7)

Ross

I believe the answer is:

mobster

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'tough' is the definition.
(both can mean a violent person)

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

Can you help me to learn more?

(Other definitions for mobster that I've seen before include "Hood" , "family man" , "Member of criminal organisation" , "Mafioso" , "Gangster" .)

I've seen this clue in The Telegraph.
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