火ひを掛かける

expression, ichidan verb

set on fire; ignite

Used for deliberately setting something on fire, often with a nuance of arson or intentional burning.

• 犯はん人にんは倉そう庫こに火ひを掛かけた。

  The culprit set fire to the warehouse.

• 枯かれ草くさに火ひを掛かけると、あっという間まに燃もえ広ひろがった。

  When he set fire to the dry grass, it spread in no time.