What is the meaning of Burn_out?

To destroy by fire.

To become extinguished due to lack of fuel.

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

To tire due to overwork; to overwork to their limit.

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

To end one's shift at a job.

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

To make (someone) unavailable for work involving exposure to ionizing radiation by employing (the person) in such work until the person's accumulated exposure reaches the maximum permitted for an administrative period, typically a year.

Nonstandard spelling of burnout.

Source: wiktionary.org