From Longman Dictionary of Contemporary Englishupright pianoˌupright piˈano noun [countable] APMa piano with strings that are in a vertical position → grand piano
Examples from the Corpus
upright piano• The room contained two hard chairs, a desk and an upright piano.• There was an upright piano and a piano bench.• There was an upright piano in the far corner with a row of framed photographs on top.• An upright piano stood against one wall, a row of framed photographs on top of it.• So was the upright piano, that is, it would be when I finished paying for it. 