noun
: a layer of soft mud made up in large part of the shells of dead globigerinae and covering great areas of the sea bottom at depths of 1000 to 3000 feet
noun
: a layer of soft mud made up in large part of the shells of dead globigerinae and covering great areas of the sea bottom at depths of 1000 to 3000 feet
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012