Word Origin & History
pile"mass, heap," early 15c., "pillar, pier of a bridge," from L. pila "stone barrier." Sense development in Latin from "pier, harbor wall of stones," to "something heaped up." In Eng., sense of "heap of things" is attested from mid-15c. (the verb in this sense is recorded from mid-14c.). The meaning "large
building" (late 14c.) is probably also derived from this word. Pile on "attack vigorously" is from 1894, Amer.Eng. Pile-up "multi-vehicle crash" first recorded 1929.
pile"heavy pointed beam," from O.E. pil "stake," also "arrow," from L. pilum heavy javelin of the Roman foot soldier, lit. "pestle" (source of O.N. pila, Ger. Pfeil "arrow"). Pile-driver in the fig. sense of "very strong hit" is recorded from 1958.
pile"soft, raised surface upon cloth," mid-14c., from Anglo-Norm. pyle or M.Du. pijl, both from L. pilus "hair." Phonological evidence rules out transmission via O.Fr. cognate peil, poil.
piles"hemorrhoids," c.1400, from M.L. pili "piles," probably from L. pila "ball" from shape.