Definition of upstairs noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌʌpˈsteəz//
; NAmE NAmE//ˌʌpˈsterz//
Parts of a house
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 [singular] the floor or floors in a building that are above the ground floor We've converted the upstairs into an office. opposite downstairs See related entries: Parts of a house
See the Oxford Advanced American Dictionary entry: upstairs