D defs.my
Entry 2 senses Webster, 1913

Collision

/kəl-ĭzh'-ən/ · Col·li·sion · IPA /kəˈlɪʒn̩/
01 n. The act of striking together; a striking together, as of two hard bodies; a violent meeting, as of railroad trains; a clashing.
  1. 1.
    The act of striking together; a striking together, as of two hard bodies; a violent meeting, as of railroad trains; a clashing.
  2. 2.
    A state of opposition; antagonism; interference.
    “The collision of contrary false principles.” — Bp. Warburton.
    “Sensitive to the most trifling collisions.” W. Irving.