n. A small mass; a relatively small aggregation or conglomeration of solid matter without regular form: as, a lump of ore, clay, or dough; to melt a number of coins into one lump.n. A protuberant part; a knob, bunch, or swelling: as, a lump raised on the head by a blow.n. A blow.n. A dull, stolid person.n. In firearmsn. The nipple-seat on the barrel.n. In a break-joint breech-loader, an iron block on the barrel which descends into a recess in the action.n. A bloom or loupe of malleable iron.To make into a mass; combine in a body or gross sum without distinction of particulars.To take in the lump, or collectively in the gross; consider or dispose of in the gross.To beat severely.To act as a lumper; be employed in loading or unloading ships, as a stevedore.n. The lump-fish.To look sullen or glum; sulk.To take without choice; take “anyhow”: a word in itself of no definite signification, used in the expression “if you don't like it, you may lump it.”n. In mining, a coarse fragment of ore, coal, phosphate rock, or any useful mineral, as contrasted with the fines, spalls, or otherwise designated smaller pieces.Noting the coarser grade of bituminous coal which is picked out as it comes from the mine.To appear larger by aggregation; bulk: as, he lumped large in public imagination.