to commence burning.
to spark off (something), to trigger
to set fire to (something), to light (something)
To subject to the action of intense heat; to heat strongly; often said of incombustible or infusible substances.
To become hot again after having cooled off (also in figurative senses).
To heat something after it has cooled off, especially previously cooked food (also in figurative senses).
An afterburner.