windowpane

[ win-doh-peyn ]
/ ˈwɪn doʊˌpeɪn /
|

noun

a plate of glass for filling a window sash within the frame.
a flounder, Scophthalmus aquosus, occurring along the Atlantic coast of North America, characterized by the thinness and translucency of its body.

adjective

designating or having a large, regular design of intersecting lines resembling a series of windowpanes: a windowpane plaid sweater.

Origin of windowpane

First recorded in 1810–20; window + pane
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for windowpane

windowpane

/ (ˈwɪndəʊˌpeɪn) /

noun

a sheet of glass in a window
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012