pile up
US /paɪl ʌp/
UK /paɪl ʌp/

1.
accumularsi, ammassarsi
to accumulate or increase in quantity, especially to an unmanageable degree
:
•
The dirty dishes started to pile up in the sink.
I piatti sporchi hanno iniziato ad accumularsi nel lavello.
•
Work tends to pile up when you're on vacation.
Il lavoro tende ad accumularsi quando sei in vacanza.
2.