balcony

Balcony comes from Italian balcone, meaning 'balcony' or 'floor-length window,' which in Old Italian meant 'scaffold.' That in turn traces back to Lombardic *balk or *balko, 'beam,' from Proto-Germanic *balkô, 'beam,' ultimately from Proto-Indo-European *bʰelǵ-, meaning 'beam, pile, prop.'

The word started as a plain structural term for a beam or support, then narrowed to describe a scaffold-like platform, before settling into the Italian sense of a floor-length window or the projecting platform we know today.

It's akin to Old High German balco and Old English balca, both meaning 'beam' or 'ridge' — and it shares its root with the English word 'balk,' which comes from that same Germanic beam-word.