County of the Republic of Ireland, in the province of Leinster, between Galway on the W and Kildare on the E; county town Tullamore; area 2,000 sq km/772 sq mi; It is low-lying, with part of the Bog of Allen to the North.
Features include the rivers Shannon (along the western boundary), Brosna, Clodagh, and Broughill and the Slieve Bloom mountains in the SE. Peat is used to fuel power stations; products include oats, barley, wheat, and cattle.