The definition of a pane is a panel or a framed part of a window or door.
(noun)An example of a pane is a piece of glass in a window frame.
See pane in Webster's New World College Dictionary
noun
Origin: ME pan < OFr < L pannus, piece of cloth < IE base *pan-, fabric > Gr pēnos, cloth, OE fana, banner
See pane in American Heritage Dictionary 4
noun
Origin:
Origin: Middle English, section, pane of glass
Origin: , from Old French pan, piece of cloth, panel
Origin: , from Latin pannus, cloth; see pan- in Indo-European roots
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