The English word window comes from Old Norse vindauga, which literally meant wind eye. It combines vind, meaning wind, and auga, meaning eye.
That image makes sense when you picture what a window does. It is an opening in a wall that lets in air and light. In that older way of thinking, a house could have an eye, and that eye faced the outside world.
This is one reason word history is so memorable. Old compounds often describe an object by its job or appearance.
- vind = wind
- auga = eye
- vindauga = wind eye
Modern English speakers do not usually feel that meaning when they say window, but the older picture is still hidden inside the word. It is a small example of how everyday vocabulary can preserve very old metaphors.
So when you hear window, you are hearing a centuries old phrase that once described a house opening as its eye for wind and light.