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English definition of “sponge”

sponge

noun (SUBSTANCE)    /spʌndʒ/
[C] a soft substance that is full of small holes and can absorb a lot of liquid, and is used for washing and cleaningEquipment used for cleaning [S] the action of rubbing something or someone with a wet sponge or cloth in order to clean it or them: Give it a sponge with a damp cloth - that will remove the blood stains.Cleaning generallyPersonal hygiene and appearance - general words
(Definition of sponge noun (SUBSTANCE) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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