Pass over Oregon and notice nothing in state (8)
I believe the answer is:
colorado
'state' is the definition.
(I know that Colorado is a American state)
'pass over oregon and notice nothing' is the wordplay.
'pass over' becomes 'col' (col is a term for a mountain pass. I am not sure about the 'over' bit.).
'oregon' becomes 'OR' (abbreviation).
'and' means one lot of letters go next to another.
'notice' becomes 'ad' (both can mean an advertisement).
'nothing' becomes 'O' (looks like zero - 0).
'col'+'or'+'ad'+'o'='COLORADO'
'in' is the link.
Can you help me to learn more?
(Other definitions for colorado that I've seen before include "US state, capital Denver" , "State in the Rockies" , "US state, W. of Kansas" , "River running through the Grand Canyon in Arizona" , "Beetle whose larvae destroy potato plants" .)