burn down phrasal verb (
see also burn)
1. if a building burns down or is burned down, it is destroyed by fire:
She was worried that the house might burn down while they were away.burn something ↔ down The old town hall was burnt down in the 1970s.2. if a fire burns down, the flames become weaker and it produces less heat
[TahlilGaran] Dictionary of Contemporary English ▲