A window is a wind-eye: English borrowed it from Old Norse vindauga, and it pushed out the words we already had, eagþyrel and eagduru, eye-hole and eye-door. Ours were named for looking out. Theirs was named for what came in, back when a window was an open gap in the wall that let the smoke out and the weather in. Then glass arrived, stopped the wind, and made the English words right again, too late: the job had already gone to the Norse one. The old eye-hole word survives only in nostril, the nose-thirl, which still does exactly what it says.