mass
nounA lump; a body of matter concreted, collected or formed into a lump; applied to any solid body; as a mass of iron or lead; a mass of flesh; as mass of ice; a mass of dough.
[Low L. missa. The word signifies primarily leisure, cessation from labor, from the L. missus, remissus, like the L. ferioe; hence a feast or holiday.]