burnt shale
noun
carbonaceous shale formed by destructive distillation of oil shale or by spontaneous combustion of shale after it has been some years in a tip: sometimes used in road making
Words nearby burnt shale
burnsville,
burnt,
burnt almond,
burnt lime,
burnt offering,
burnt shale,
burnt sienna,
burnt umber,
burnt-out,
burnt-tip orchid,
burnup