No  definitions  found  for  "boum",  perhaps  you  mean: 
  web1913:  Bum  Bom  Boom  Boud  Bouk  Boul  Boun  Bour  Bout 
  wn:  bum  boom  bout 
  gazetteer:  Blum 
  jargon:  bum 
  foldoc:  bum 
  vera:  BOM 

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