WordNet sense 1 (a large sum of money (especially as pay or profit)):

bundle, megabucks, big bucks, big money

WordNet sense 2 ((often followed by `of') a large number or amount or extent):

batch, deal, flock, heap, lot, mass, mess, mint, peck, plenty, pot, raft, sight, slew, spate, stack, wad, hatful, mickle, muckle, good deal, great deal, quite a little, tidy sum, whole lot, whole slew

WordNet sense 3 (a collection of objects laid on top of each other):

agglomerate, cumulus, mound, agglomerate, cumulation

WordNet sense 4 (fine soft dense hair (as the fine short hair of cattle or deer or the wool of sheep or the undercoat of certain dogs)):

down

WordNet sense 5 (battery consisting of voltaic cells arranged in series; the earliest electric battery devised by Volta):

voltaic pile, galvanic pile

WordNet sense 6 (a column of wood or steel or concrete that is driven into the ground to provide support for a structure):

piling, stilt, spile

WordNet sense 7 (the yarn (as in a rug or velvet or corduroy) that stands up from the weave):

nap

WordNet sense 8 (a nuclear reactor that uses controlled nuclear fission to generate energy):

atomic pile, atomic reactor, chain reactor

WordNet sense 9 (press tightly together or cram):

jam, mob, pack, throng