1 mass, piece, gob, gobbet, clod, chunk, clot, wad, clump, hunk, nugget; cube, wedge, cake:
There was a lump of earth was clogging the drain. May I have two lumps of sugar, please?
2 bump, growth, swelling, protuberance, protrusion, prominence, bulge, excrescence, tumescence, nodule, knob; wen, cyst, boil, carbuncle, blister, wart, corn:
You ought to see a doctor about that lump on your foot.
3 Often, lump together. combine, join, consolidate, collect, bunch, group, unite, mass, aggregate, blend, mix, throw or put together:
Don't lump me together with everyone else, without even asking my opinion.
Usually, lump it. allow, tolerate, suffer, put up with, bear, stand, brook, endure:
I'm afraid you'll just have to lump it, whether you like it or not.