pileup

/ˈpaɪlˌʌp/
noun
  1. A traffic accident involving multiple vehicles crashing into each other.
    • Drivers were warned to slow down to avoid a pileup.
    • The fog led to a 20-car pileup on the bridge.
    • A massive pileup on the highway caused hours of delays.
  2. A situation where things accumulate or become crowded together.
    • A pileup of snow blocked the driveway.
    • The pileup of emails in her inbox was overwhelming.
    • There was a pileup of work after the holiday break.
What does "pileup" mean? | whatsthatwordmean | whatsthatwordmean