Source : Webster's Revised Unabridged Dictionary (1913)

Trespass \Tres"pass\, n. [OF. trespas, F. tr['e]pas death. See
   {Trespass}, v.]
   1. Any injury or offence done to another.

            I you forgive all wholly this trespass. --Chaucer.

            If ye forgive not men their trespasses, neither will
            your Father forgive your trespasses.  --Matt. vi.
                                                  15.

   2. Any voluntary transgression of the moral law; any
      violation of a known rule of duty; sin.

            The fatal trespass done by Eve.       --Milton.

            You . . . who were dead in trespasses and sins.
                                                  --Eph. if. 1.

   3. (Law)
      (a) An unlawful act committed with force and violence (vi
          et armis) on the person, property, or relative rights
          of another.
      (b) An action for injuries accompanied with force.

   {Trespass offering} (Jewish Antiq.), an offering in expiation
      of a trespass.

   {Trespass on the case}. (Law) See {Action on the case}, under
      {Case}.

   Syn: Offense; breach; infringement; transgression;
        misdemeanor; misdeed.

Source : WordNet®

trespass on the case
     n : an action brought to recover damages from a person whose
         actions have resulted indirectly in injury or loss; "a
         person struck by a log as it was thrown onto a road could
         maintain trespass against the thrower but one who was
         hurt by stumbling over it could maintain and action on
         the case"