set fire to (something)

set fire to (something)

To ignite something; to cause something to catch on fire. He set fire to the fireworks, then ran behind the car for cover. Police arrested the man on suspicion of setting fire to the local post office.
See also: fire, set

set fire to someone or something

 and set someone or something on fire
to ignite someone or something; to put someone or something to flames. The thief set fire to the building. The poor man accidentally set himself on fire.
See also: fire, set

set fire to

To cause to ignite and burn.
See also: fire, set