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Any of various marine invertebrates, mostly of the phylum Porifera, that have a porous skeleton often of silica.
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A piece of porous material used for washing (originally made from the invertebrates, now often made of plastic).
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A porous material such as sponges consist of.
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A heavy drinker.
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A type of light cake.
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A type of steamed pudding.
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A person who takes advantage of the generosity of others (abstractly imagined to absorb or soak up the money or efforts of others like a sponge).
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A form of contraception that is inserted vaginally; a contraceptive sponge.
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Any sponge-like substance.
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A mop for cleaning the bore of a cannon after a discharge. It consists of a cylinder of wood, covered with sheepskin with the wool on, or cloth with a heavy looped nap, and having a handle, or staff.
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The extremity, or point, of a horseshoe, corresponding to the heel.
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A nuclear power plant worker routinely exposed to radiation.