unpile

[uhn-pahyl]
verb (used without object), un·piled, un·pil·ing.
  1. to become removed or separated from a piled condition: The football players unpiled after each play.

Origin of unpile

First recorded in 1605–15; un-2 + pile1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018