Pileup (noun)

A mass of things that have fallen or been piled up.

Origin:

Mid-19th century: from pile + -up.

Examples:

  1. A pileup of papers covered his desk.
  2. The pileup of cars caused a major traffic jam.
  3. There was a pileup of logs at the bottom of the hill.
  4. A pileup of snow and ice blocked the entrance to the driveway.
  5. The pileup of dishes in the sink was growing larger by the day.
Some random words: directional, fungible, boundary