WordWeb Online

1. Exhausted as a result of longtime stress
   "she was burned-out before she was 30";
   - burnt-out
    
2. Inoperative as a result of heat or friction
   "a burned-out picture tube";
   - burnt-out
    
3. Destroyed or badly damaged by fire
   "a row of burned-out houses";
   - burned, burnt, burned-over, burnt-out

See also: destroyed, tired, unserviceable