set light to something
set light to (something)
To ignite or set fire to something. He set light to the fireworks, then ran behind the car for cover. Police arrested the man on suspicion of setting light to the local post office.
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.
set ˈlight to something
(especially British English) make something start burning: A spark from the fire had set light to a rug.Farlex Partner Idioms Dictionary © Farlex 2017