[n] a compact mass; "a ball of mud caught him on the shoulder" [v] group or chunk together in a certain order or place side by side [v] put together indiscriminately; "lump together all the applicants"
ball, clod, clump, collocate, glob, lump, lump, lump
accumulation, acervation, agglomerate, agglomeration, aggregate, aggregation, allotment, allowance, amassment, amount, ante, batch, bet, big end, bigger half, bit, bite, block, book, bowl, budget, bulk, bunch, butt, cast, change of pace, change-up, chip,