1. [ noun ] (government,geography) a midwestern state in north central United States in the Great Lakes region
Synonyms: oh Buckeye_State
Related terms: American_state Midwest Cleveland Columbus Cincinnati athens dayton Wabash youngstown mansfield Toledo Akron
2. [ noun ] (geography) a river that is formed in western Pennsylvania and flows westward to become a tributary of the Mississippi River
Synonyms: Ohio_River
Related terms: river US
Similar spelling:   oh