window sash

English Thesaurus

1. a framework that holds the panes of a window in the window frame (noun.artifact)

hypernym	:	framework,
definition	:	a structure supporting or containing something (noun.artifact)

hyponym	:	casement,
definition	:	a window sash that is hinged (usually on one side) (noun.artifact)

part meronym	:	window,
definition	:	a framework of wood or metal that contains a glass windowpane and is built into a wall or roof to admit light or air (noun.artifact)