SPONGE

(SUBSTANCE) [noun] - a soft substance that is full of small holes and can absorb a lot of liquid, and is used for washing and cleaningSponge is either artificial or it is the soft skeleton of a simple sea creature of the same name. [U]He rubbed her back with a soapy sponge. [C]Give it a sponge (= Rub it) with a damp cloth - that will remove the blood stains. [U](UK and ANZ) A sponge bag is a small waterproof bag used for carrying your toothbrush, facecloth, soap, etc. when you are travelling.Sponge rubber is (US) for foam rubber. See at foam.