burn down
US /bɜːrn daʊn/
UK /bɜːrn daʊn/

1.
queimar completamente, incendiar
to destroy something with fire, or to be destroyed by fire
:
•
The old factory burned down last night.
A antiga fábrica queimou completamente na noite passada.
•
They threatened to burn down the entire building.
Eles ameaçaram incendiar o prédio inteiro.