noun (n)

• the radioactive particles that settle to the ground after a nuclear explosion

  the partikel radioaktif yang menetap di kawasan itu setelah ledakan nuklir

  Synonym:
  radioactive dust
  

  source: wordnet30
• any adverse and unwanted secondary effect

  setiap merugikan dan tak diinginkan sekunder efek

  Example:
  A strategy to contain the fallout from the accounting scandal.
  

  Synonym:
  side effect
  

  source: wordnet30