nmoellonRubble-stone, sometimes used in architecture, set in mortar, for such uses as filling between the facing-walls of a structure or in the spandrels of a bridge.
nmoellonIn tanning, partly oxidized oil recovered by expression from skins in the process of oil-tanning. It is used in currying leather which has already been tanned by other methods, and for this purpose is sometimes prepared specially from skins that have been repeatedly used. Also called degras.
Chambers's Twentieth Century Dictionary
nMoellonmō′el-lon rubble-stone with mortar, used as a filling in mason-work.