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wool sponge

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noun

a commercial sponge, Hippiospongia lachne, of Florida and the West Indies, the surface of which resembles the fleece of a sheep.

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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Also called sheepswool sponge.

Origin of wool sponge

An Americanism dating back to 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
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