What is the meaning of the word "burned-out"?

Definitions:

  1. exhausted as a result of longtime stress copy to clipboard adjective
    • The relentless pace of a large political campaign usually ends with a burnedout staff that are glad when it is over. copy to clipboard
  2. inoperative as a result of heat or friction copy to clipboard adjective
    • a burnedout picture tube copy to clipboard

Synonyms: