glass chalk
n.— «Though several brands, colors and sizes currently are available, what is called “glass chalk,” “car chalk” or “car graffiti” began as liquid shoe polish. The process of scraping the shoe polish off car windows with razor blades must have lost its appeal, for now this new product has been made specifically for writing on windows with less mess.» —“Unleash your inner graffiti artist” by Kim Eiten News Tribune (La Salle, Illinois) Nov. 2, 2006. (source: Double-Tongued Dictionary)
Further reading
One secret to writing well is … there is no secret! There’s no substitute for simply sitting down day after day to practice the craft and learn from your mistakes. Plus, childhood mixups around word definitions can lead to some funny stories...
There are eight major planets, but more than a million minor ones, including asteroids. If you discover one, you get the honor of naming it. The Dictionary of Minor Planet Names includes minor planets named for rock bands, jazz musicians, poets, and...