a large, dark brown, commercial sponge, Spongia graminea, of Florida, the West Indies, and the Gulf of Mexico.
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- grass shears,
- grass skiing,
- grass snake,
- grass snipe,
- grass sorghum,
- grass style,
- grass tree,
- grass up,
- grass widow,
- grass widower
Origin of grass sponge
An Americanism dating back to 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for grass sponge
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