What does pile up mean?

phrv. When things pile up, they gradually increase in quantity, often becoming a problem.

pile up

Frequency

Difficulty

Tags CEFR-B2

phrase verb

When things pile up, they gradually increase in quantity, often becoming a problem.

The dishes started to pile up in the sink because no one wanted to wash them.

When things pile up, they gradually increase in quantity, often becoming a problem.