pile-up

pile up — phrasal verb with pile verb uk/paɪl/ us
B2 If something unpleasant piles up, you get more of it.

накапливаться
My work's really starting to pile up.

PILE-UP noun

[ C ] uk/ˈpaɪlʌp/ us
an accident involving several cars

столкновение нескольких автомобилей