means A soft, porous material—originally the skeleton of a sea animal, now often synthetic—that soaks up liquid and is used for cleaning, washing, or wiping.

from From Greek 'spongia,' the name for the real sea creature divers harvested and squeezed dry. Latin borrowed it as 'spongia,' which softened over centuries into Old English 'sponge' and Old French 'esponge.' The same root quietly gave us 'fungus' (a cousin through Latin), because both were squishy, spongy things the ancients lumped together. Everything later—the kitchen sponge, the cake, the 'sponging' freeloader who absorbs your money—grew from that one squeezable animal.