Definition of "Pile" :

noun: a nuclear reactor that uses controlled nuclear fission to generate energy

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 column of wood or steel or concrete that is driven into the ground to provide support for a structure

noun: battery consisting of voltaic cells arranged in series; the earliest electric battery devised by Volta

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: a collection of objects laid on top of each other

noun: a large sum of money (especially as pay or profit)

noun: (often followed by of') a large number or amount or extent

verb: place or lay as if in a pile

"The teacher piled work on the students until the parents protested."

verb: arrange in stacks

verb: press tightly together or cram