Proprietor of Venice bar sounded rough — in a state! (7)
I believe the answer is:
arizona
'state' is the definition.
(Arizona is a US state)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for arizona that I've seen before include "Site of Grand Canyon" , "State of southwest USA" , "American state with Grand Canyon" , "US state, home to the Grand Canyon" , "US state, capital Phoenix" .)