Definition of pileup
1 : a collision involving usually several motor vehicles
2a : a jammed tangled mass or pile (as of motor vehicles or people) resulting from collision or accumulationb : accumulation
Examples of pileup in a Sentence
A five-car pileup slowed traffic.
a pileup of e-mail messages that needed to be dealt with
Recent Examples of pileup from the Web
A motorcycle rider vanished after causing an 8-vehicle pileup on state Route 94 late Wednesday night, the California Highway Patrol said.
There had been a five-car pileup exactly where the Mobile Century system first reported the slowdown.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pileup'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of pileup
PILEUP Defined for English Language Learners
Definition of pileup for English Language Learners
: an accident in which several or many vehicles crash into each other
: a large amount of something that has increased gradually over a period of time
Seen and Heard
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