fallout

noun6

1. •
   The event of small airborne particles falling to the ground in significant quantities as a result of major industrial activity, volcano eruption, sandstorm, nuclear explosion, etc.
2. •
   A negative side effect; an undesirable or unexpected consequence.
3. •
   The particles themselves.

   • On 26 April 1986 the reactor number four at the Chernobyl Nuclear Power Plant located in the Soviet Union near Pripyat in Ukraine exploded. Further explosions and the resulting fire sent a plume of highly radioactive fallout into the atmosphere and over an extensive geographical area.
4. •
   An impromptu guest used to fill in for another guest spot who is a no-show or who has cancelled last minute.
5. •
   (rare) A declined offer in a sales transaction when acceptance was presumed.
6. •
   (rare) The person who declines such an offer.