What is the meaning of the word "collision"?

Definitions:

  1. a brief event in which two or more bodies come together copy to clipboard noun
    • The collision of the particles resulted in an exchange of energy and a change of direction. copy to clipboard
  2. a conflict of opposed ideas or attitudes or goals copy to clipboard noun
    • a collision of interests copy to clipboard
  3. an accident resulting from violent impact of a moving object copy to clipboard noun
    • three passengers were killed in the collision copy to clipboard