Burn out or burnout?

verb To destroy by fire

noun Alternative spelling of burnout

in the parking lot doing burn-outs

verb To become extinguished due to lack of fuel

The candle finally burned out

verb To become nonfunctional (especially of lightbulbs or similar light-producing devices)

verb To tire due to overwork; to overwork to one's limit

After six months of twelve-hour workdays, most people just burn out and quit

verb To cause (someone) to tire due to overwork; to cause (someone) to overwork to one's limit

verb slangTo end one's shift at a job

I start my shift at three in the afternoon, and get to burn out at midnight

verb To have one's tires skid against the ground; to peel off, peel out

noun The experience of long-term exhaustion and diminished interest, especially in one's career

noun A person who has the experience of long-term exhaustion and diminished interest

Ten years of this soul-sucking job would turn any ambitious young person into a burnout

noun A feeling of being overwhelmed and exhausted from stress and overwork, rendering one cynical, uncaring or depression

noun USslangSomeone whose brains have figuratively been burned out by drugs

There’s no way we can hire that guy. He’s a total burnout–he can't do the work

noun The shutoff of a rocket motor after exhausting its fuel or having been irreversibly throttled after the application of a planned delta-v

noun The failure of an electrical device, usually through overheating due to the application of excessive power

noun Use of the throttle to spin the wheels of a vehicle being held stationary, causing the spinning tires to produce smoke and burn rubber