Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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pile1 an accumulation of things on top of each other; heap; stack. [9 definitions]
pile2 a large shaft of steel, wood, concrete, or the like that is forced or pounded into the ground to serve as a structural and supporting element of a wall, building, or the like. [3 definitions]
pile3 the projecting loops or strands of yarn that form the surface of some fabrics, rugs, and the like. [3 definitions]