Pass road meandering round state (8)
I believe the answer is:
colorado
'state' is the definition.
(I know that Colorado is a state)
'pass road meandering round' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'meandering' indicates an anagram.
'round' becomes 'o' (round can mean a round object).
'road' is an anagram of 'orad'.
'col'+'orad'+'o'='COLORADO'
(Other definitions for colorado that I've seen before include "Beetle whose larvae destroy potato plants" , "in America?" , "River running through the Grand Canyon in Arizona" , "Boulder's state" , "US state (with a beetle)" .)