A piece of glass filling a window or a section of a window.(noun)
A pattern of thin lines forming large squares on a background of a different color.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "windowpane" in a sentence
"Told in windowpane prose, this story reads as if it has come up through our collective memory."
"Somehow a windowpane is not thick enough for comfort when a male lion is staring right at you. posted by Jennifer | 9: 03 AM"
"So I can't jump, I mused, but I can break a windowpane and take the edge to my neck."