The Collaborative International Dictionary of English v.0.48:

Collision \Col*li"sion\, n. [L. collisio, fr. collidere. See
   Collide.]
   1. The act of striking together; a striking together, as of
      two hard bodies; a violent meeting, as of railroad trains;
      a clashing.
      [1913 Webster]

   2. A state of opposition; antagonism; interference.
      [1913 Webster]

            The collision of contrary false principles. --Bp.
                                                  Warburton.
      [1913 Webster]

            Sensitive to the most trifling collisions. --W.
                                                  Irving.

   Syn: Conflict; clashing; encounter; opposition.
        [1913 Webster]

WordNet (r) 3.0 (2006):

collision
    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"

Moby Thesaurus II by Grady Ward, 1.0:

132 Moby Thesaurus words for "collision":
   accident, antagonism, antipathy, antithesis, appulse, backlash,
   bad blood, belligerence, blow, brunt, bulldozing, bulling, bump,
   calamity, cannon, carambole, carom, casualty, cataclysm,
   catastrophe, clash, clashing, competition, concussion, conflict,
   confrontation, confutation, contention, contradiction,
   contradistinction, contraindication, contraposition, contrariety,
   contrariness, contrast, contretemps, counteraction,
   counterposition, counterworking, crack-up, crankiness, crash,
   cross-purposes, crotchetiness, crump, crunch, demolishment,
   despitefulness, destruction, dilapidation, disaccord, disagreement,
   disaster, discrepancy, dissension, dissent, encounter, enmity,
   fractiousness, friction, grief, hammering, hate, hatred, hostility,
   ill hap, impact, impingement, inconsistency, inimicalness,
   interference, jar, jolt, kick, malevolence, malice, malignity,
   mauling, meeting, misadventure, mischance, misfortune, mishap,
   nasty blow, near-miss, negativeness, nonconformity, noncooperation,
   obstinacy, onslaught, oppositeness, opposition, opposure,
   oppugnance, oppugnancy, percussion, perverseness, perversity,
   pileup, polarity, quarrelsomeness, ramming, reaction,
   recalcitrance, recoil, refractoriness, renitency, repercussion,
   repugnance, resistance, revolt, rivalry, ruin, shipwreck, shock,
   showdown, sideswipe, sledgehammering, smash, smash-up, smashing,
   smashup, spite, spitefulness, staggering blow, swimming upstream,
   thrusting, tragedy, uncooperativeness, vying, whomp, wreck



The Free On-line Dictionary of Computing (30 December 2018):

collision

   1.  When two hosts transmit on a network at
   once causing their packets to corrupt each other.

   See collision detection.

   2.  hash collision.

   (1995-01-06)


Bouvier's Law Dictionary, Revised 6th Ed (1856):

COLLISION, maritime law. It takes place when two ships or other vessels run
foul of each other, or when one runs foul of the other. In such cases there
is almost. always a damage incurred.
     2. There are four possibilities under which an accident of this sort
may occur. 1. It may happen without blame being imputable to either party,
as when the loss is occasioned by a storm, or any other vis major; in that
case the loss must be borne by the party on whom it happens to light, the
other not being responsible to him in, any degree.
     3. - 2. Both parties may be to blame, as when there has been a want of
due diligence or of skill on both sides; in such cases, the loss must be
apportioned between them, as having been occasioned by the fault of both of
them. 6 Whart. R. 311..
     4. - 3. The suffering party may have been the cause of the injury, then
he must bear the loss.
     5. - 4. It may have been the fault of the ship which ran down the
other; in this case the injured party would be entitled to an entire
compensation from the other. 2 Dodson's Rep. 83, 85; 3 Hagg. Adm. R. 320; 1
How. S. C. R. 89. The same rule is applied to steamers.. Id. 414.
     6. - 5. Another case has been put, namely, when there has been some
fault or neglect, but on which side the blame lies, is uncertain. In this
case, it does not appear to be settled whether the loss shall be apportioned
or borne by the suffering party opinions on this subject are divided.
     7. A collision between two ships on the high seas, whether it be the
result of accident or negligence, is, in all cases, to be deemed a peril of
the seas within the meaning of a policy of insurance. 2 Story, R. 176; 3
Sumn. R. 889.  Vide, generally, Story, Bailm. Sec. 607 to 612; Marsh.. Ins.
B. 1, c. 12, s. 2; Wesk. Ins. art. Running Foul; Jacobsen's Sea Laws, B. 4,
c. 1; 4 Taunt. 126; 2 Chit. Pr. 513, 535; Code de Com. art. 407; Boulay-
Paty, Cours de Dr. Commercial, tit. 12, s. 6; Pard. n. 652 to 654; Pothier,
Avaries, n. 155; 1 Emerig. Assur. ch. 12, Sec. 14.