Collision - Definition

n 1: (physics) a brief event in which two or more bodies come
together; "the collision of the particles resulted in an
exchange of energy and a change of direction" [syn:
collision, hit]
2: an accident resulting from violent impact of a moving object;
"three passengers were killed in the collision"; "the
collision of the two ships resulted in a serious oil spill"
3: a conflict of opposed ideas or attitudes or goals; "a
collision of interests"