Meanings
How to pronounce "pile up":
AU
To form a pile, stack, or heap.
Example: "The kids piled up their boots and coats by the back door."
To collect or accumulate, as a backlog.
Example: "The requests piled up while she was away."
Example Sentences
1
The dishes started to pile up in the sink.
2
The laundry began to pile up after a week of neglect.
3
Due to the snowstorm, cars started to pile up on the highway.