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grass sponge

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noun
  1. a large, dark brown, commercial sponge, Spongia graminea, of Florida, the West Indies, and the Gulf of Mexico.
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Origin of grass sponge

An Americanism dating back to 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for grass sponge

Historical Examples

  • This is one of the species of sponges of the third commercial grade, which bear the trade-name of "grass-sponge."

    The Sea-beach at Ebb-tide

    Augusta Foote Arnold