pelt down

US /pelt daʊn/
UK /pelt daʊn/
"pelt down" picture
1.

caer a cántaros, llover a mares

to rain very heavily

:
The rain began to pelt down just as we left the house.
La lluvia empezó a caer a cántaros justo cuando salimos de casa.
We had to take shelter because it was pelting down.
Tuvimos que refugiarnos porque estaba lloviendo a cántaros.