| noun | a collection of objects laid on top of each other |
| noun | (often followed by `of') a large number or amount or extent “a batch of letters” |
| noun | a large sum of money (especially as pay or profit) “she made a bundle selling real estate” |
| noun | fine soft dense hair (as the fine short hair of cattle or deer or the wool of sheep or the undercoat of certain dogs) |
| noun | battery consisting of voltaic cells arranged in series; the earliest electric battery devised by Volta |
| noun | a column of wood or steel or concrete that is driven into the ground to provide support for a structure |
| noun | the yarn (as in a rug or velvet or corduroy) that stands up from the weave “for uniform color and texture tailors cut velvet with the pile running the same direction” |
| noun | a nuclear reactor that uses controlled nuclear fission to generate energy |
| verb | arrange in stacks “heap firewood around the fireplace” |
| verb | press tightly together or cram “The crowd packed the auditorium” |
| verb | place or lay as if in a pile “The teacher piled work on the students until the parents protested” |
| pile | verb | place or lay as if in a pile |
| heap | verb | arrange in stacks |
| agglomerate | adjective | clustered together but not coherent |
| agglomerate | verb | form into one cluster |
| cumulate | verb | collect or gather |
| cumulous | adjective | thrown together in a pile |
| plenteous | adjective | affording an abundant supply |
| wad | verb | crowd or pack to capacity |
| downy | adjective | covered with fine soft hairs or down |
| pilary | adjective | covered with hairs especially fine soft ones |
| pilous | adjective | covered with hairs especially fine soft ones |
| stack | noun | an orderly pile |
| stacker | noun | a laborer who builds up a stack or pile |
| pile | noun | a collection of objects laid on top of each other |
| heap | noun | a collection of objects laid on top of each other |
| throng | noun | a large gathering of people |
| mob | noun | a disorderly crowd of people |