Wordnet 3.0
VERB (1)
1. 
 start to burn or burst into flames; 
- Example: "Marsh gases ignited suddenly"- Example: "The oily rags combusted spontaneously"[syn: erupt, ignite, catch fire, take fire, combust, conflagrate]
WordNet (r) 3.0 (2006):
take fire
    v 1: start to burn or burst into flames; "Marsh gases ignited
         suddenly"; "The oily rags combusted spontaneously" [syn:
         erupt, ignite, catch fire, take fire, combust,
         conflagrate]