Pane of Glass
This comes from the word glass, and it refers to the stuff used to make Cinderella's slippers, and windows, in which case it can also mean a pane of glass.
We'll learn how to say the other meanings of "glass" later!
Is this pen made of glass?
Wow, it looks like Cinderella's glass slipper.
You have bird poop on your windshield.