Meaning

noun the remains of something that has been destroyed or broken up

originInherited from Middle English rouble, rubel, robel, robeil, from Anglo-Norman *robel (“bits of broken stone”). Presumably related to rubbish, originally of same meaning (waste material, bits of stone, rubble). Ultimately presumably from Old Norse rubba (“to huddle, crowd together, heap up", possibly also "to rub, scrape”), from Proto-Germanic *rubbōną (“to rub, scrape”), related to Proto-Germanic…

Etymology from Wiktionary, CC BY-SA 3.0