fallout: Meaning and Definition of

fall•out

1. the settling to the ground of airborne particles ejected into the atmosphere from the earth by explosions, eruptions, forest fires, etc., esp. such settling from nuclear explosionsCf. rainout.
2. the particles themselves. Cf. rainout.
3. an unexpected or incidental effect, outcome, or product: the psychological fallout of being obese.
4. effects; results: emotional fallout from a divorce.