( n. )
A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand.
( n. )
A mixed earthy substance, consisting of carbonate of lime, clay, and sand, in very varivble proportions, and accordingly designated as calcareous, clayey, or sandy. See Greensand.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012