definition of
[fire up]

[1] #1 fire up v. arouse or excite feelings and passions; "The ostentatious way of living of the rich ignites the hatred of the poor"; "The refugees' fate stirred up compassion around the world"; "Wake old feelings of hatred". wn

[2] #2 fire up v. begin to smoke; "After the meal, some of the diners lit up". wn