Definition of sash window noun from the Oxford Advanced Learner's Dictionary


sash window

BrE BrE//ˌsæʃ ˈwɪndəʊ//
; NAmE NAmE//ˌsæʃ ˈwɪndoʊ//
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a window that consists of two separate parts, one above the other that you open by sliding one of the parts up or down
See the Oxford Advanced American Dictionary entry: sash window