Glass suitable for windows, or such as is commonly used for windows, especially the commoner kinds, as distinguished from plate-glass or other more costly varieties.(noun)
The Century Dictionary (Public Domain)
Use "window-glass" in a sentence
"But have you thought of ordering the window-glass?"
"Muffled aluminum laughter spat from speakers and shook window-glass."
"Tiphani closed her eyes as rounds peppered the Almighty McD, spalling the window-glass."