burn out

to become exhausted

• I'm absolutely burnt out.
• Tom burned himself out as a baseball player.

to stop burning

• The candle burned out.
• Don't let the fire burn out.
• Violent fires soon burn out themselves.
• Fire will keep burning even after the twig or the stick that started the fire has burned out.

to stop feeling an emotion

• The passion has burned itself out in him

to stop working (electrical equipment)

• Laika died when Sputnik 2 burned out in the atmosphere.
• "I think my radio burned out when we lost electricity." "But doesn't it run on batteries?"
• The bulb has burned out.
• The light bulb burned out.