verb (used with object), un·piled, un·pil·ing.
to disentangle or remove from a piled condition: to unpile boxes.
verb (used without object), un·piled, un·pil·ing.
to become removed or separated from a piled condition: The football players unpiled after each play.
Origin of unpile
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019