Definition of "window glass" []

• Glass in panes suitable for windows. (noun)
• Panes of glass for windows; the kind of glass used in windows. (noun)

Gnu Collaboartive International Dictionary of English: licensed under The Code Project Open License (CPOL)

• "In shelling the city a few days since only one entered, the others fell short, that one entered the upper window glass of the Union Bank& fell on the floor it was completely exhausted after its long flight, & had not strength left to explode, I believe the greek fire a humbug."
• "The small squares of window glass were opaque under a variety of different-colored layers of paint."