noun
a porous, absorbent, and often soft material used for cleaning or absorbing liquid
verb
to clean or wipe with a sponge
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The scientist used a sponge to absorb the excess liquid in the experiment.
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Can you pass me the sponge so I can clean up this spill?
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I love using a sponge to scrub dishes, it makes cleaning so much easier.
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Her mind was like a sponge, absorbing every piece of information she came across.