window sash

Noun
  1. A framework that holds the panes of a window in the window frame (synset 104143593)
    is a type of: frame, framework - a structure supporting or containing something
    subtypes: casement - a window sash that is hinged (usually on one side)
    is a part of: window - a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air
    same as: sash

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