noun (n)

• someone who demolishes or dismantles buildings as a job(noun.person)

  source: wordnet30
• someone who commits sabotage or deliberately causes wrecks(noun.person)

  Synonym:
  diversionist, saboteur
  

  source: wordnet30
• a truck equipped to hoist and pull wrecked cars (or to remove cars from no-parking zones)(noun.artifact)

  Synonym:
  tow car, tow truck
  

  source: wordnet30
• One who causes a wreck, as by false lights, and the like.(noun)

  source: webster1913