What is the meaning of pile up?

Collect or gather.
- usage: "Journals are accumulating in my office"; "The work keeps piling up"
- synonyms: accumulate, cumulate, conglomerate, gather, amass
Arrange into piles or stacks.
- usage: "She piled up her books in my living room"
- synonyms: heap up, stack up
Get or gather together.
- usage: "I am accumulating evidence for the man's unfaithfulness to his wife"; "She is amassing a lot of data for her thesis"; "She rolled up a small fortune"
- synonyms: roll up, collect, accumulate, amass, compile, hoard

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APA	WordNet. (2010). pile up. Retrieved September 22, 2026, from http://smartdefine.org/pile_up/definitions/1329411
Chicago	WordNet. 2010. "pile up" http://smartdefine.org/pile_up/definitions/1329411 (accessed September 22, 2026).
Harvard	WordNet 2010, pile up, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/pile_up/definitions/1329411>.
MLA	WordNet. "pile up" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/pile_up/definitions/1329411>

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