combust in WordNet English dictionary

1. undergo combustion
   "Maple wood burns well"
   burn  combust 
   
2. cause to burn or combust
   "The sun burned off the fog"; "We combust coal and other fossil fuels"
   burn  combust 
   
3. start to burn or burst into flames
   "Marsh gases ignited suddenly"; "The oily rags combusted spontaneously"
   erupt  ignite  catch fire  take fire  combust  conflagrate 
   
4. cause to become violent or angry
   "Riots combusted Pakistan after the U.S. air attacks on Afghanistan"
   combust