pile up

US /paɪl ʌp/
UK /paɪl ʌp/
"pile up" picture
1.

acumularse, amontonarse

to accumulate or increase in quantity, especially to an unmanageable degree

:
The dirty dishes started to pile up in the sink.
Los platos sucios empezaron a acumularse en el fregadero.
Work tends to pile up when you're on vacation.
El trabajo tiende a acumularse cuando estás de vacaciones.
2.

chocar, amontonarse

to crash or collide, especially involving several vehicles

:
Several cars piled up on the icy road.
Varios coches se amontonaron en la carretera helada.
The accident caused traffic to pile up for miles.
El accidente provocó que el tráfico se acumulara por millas.