Window is first recorded in the early 13th century, and at the start referred to an unglazed hollow in a roof. Window changed the vintage english eagþyrl, which actually means ‘eye-hollow,’ and ‘eagduru’ ‘eye-door’.
Many germanic languages however followed the latin word ‘fenestra’ to explain a window with glass, inclusive of general swedish ‘fönster’, or german’fenster’. The usage of window in english is probably because of the scandinavian affect on the english language with the aid of loanwords at some point of the viking age. In english the word fenester become used as a parallel until the mid-18th century. Fenestration remains used to describe the association of home windows inside a façade, as well as defenestration, which means to throw something out of a window.