石せっ灰かい海かい綿めんMeaningsNoun1. calcareous sponge (any sponge of class Calcarea)Kanji used石stone灰ashes海sea綿cottonPitch accentせっかいかいめんComposed of石せっ灰かいlime; quicklime; caustic limeNoun海かい綿めんspongeNoun