'pane-less' originates from the English word 'pane,' which refers to a single sheet of glass in a window or door, combined with the suffix '-less,' indicating absence.

'Pane' comes from the Middle English word 'pan,' which referred to a piece or section, and 'less' is a common English suffix used to denote absence.

Initially, 'pane-less' simply meant 'without a pane,' and this meaning has remained consistent over time.