The Collaborative International Dictionary of English v.0.48:

Contravention \Con`tra*ven"tion\, n. [Cf. F. contravention.]
   The act of contravening; opposition; obstruction;
   transgression; violation.
   [1913 Webster]

         Warrants in contravention of the acts of Parliament.
                                                  --Macaulay.
   [1913 Webster]

         In contravention of all his marriage stipulations.
                                                  --Motley.
   [1913 Webster]

WordNet (r) 3.0 (2006):

contravention
    n 1: coming into conflict with [syn: dispute, contravention]

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

CONTRAVENTION, French law. An act which violates the law, a treaty or an
agreement which the party has made. The Penal Code, art. 1, denominates a
contravention, that infraction of the law punished by a fine, which does not
exceed fifteen francs, and an imprisonment not exceeding three days.