Wiktionary
vb. (en-third-person singularfire up)
Usage examples of "fires up".
This they affected not merely by the method of telepathic speech but by enabling him to enter directly into the experiences of many individual flames in man-made fires up and down the world.
We will keep the fires up, to allow them to suppose that we are still encamped, that they may not pursue.
He fires up the heavy lift required to maneuver track plates and linkages and begins the arduous task of replacing my treads.
The priest brought silence by raising his arms, and the jewels in Lellih's girdle splashed green and red fires up onto her breast and neck as she bent above the tripod lamp.
Danlo looked through the flickering red fires up at the circle of skulls.
Randy fires up a piece of software that is technically called Novus Ordo Seclorum but that everyone calls Ordo for short.