State east of Oregon (5)
I believe the answer is:
idaho
(Other definitions for idaho that I've seen before include "North-western US state" , "US state S. of Montana" , "The Gem State (US)" , "found in America" , "NW state of USA" .)
I believe the answer is:
idaho
(Other definitions for idaho that I've seen before include "North-western US state" , "US state S. of Montana" , "The Gem State (US)" , "found in America" , "NW state of USA" .)