• (n.) A fresh-water sponge (Spongilla), common in the north of Europe, the powder of which is used to take away the livid marks of bruises.
Bad`i·a'ga (băd`ĭā'gȧ or bȧd*yä'gȧ) noun [ Russian badiaga .] (Zoology) A fresh-water sponge (Spongilla) , common in the north of Europe, the powder of which is used to take away the livid marks of bruises.