ALL meanings of ohio river
O·hi·o riv·er
O o - noun ohio river a state in the NE central United States: a part of the Midwest. 41,222 sq. mi. (106,765 sq. km). Capital: Columbus. Abbreviation: OH (for use with zip code), O. 1
- noun ohio river a river formed by the confluence of the Allegheny and Monongahela rivers, flowing SW from Pittsburgh, Pa., to the Mississippi in S Illinois. 981 miles (1580 km) long. 1