The Collaborative International Dictionary of English v.0.48:

Incitement \In*cite"ment\, n. [Cf. F. incitement.]
   [1913 Webster]
   1. The act of inciting.
      [1913 Webster]

   2. That which incites the mind, or moves to action; motive;
      incentive; impulse. --Burke.
      [1913 Webster]

            From the long records of a distant age,
            Derive incitements to renew thy rage. --Pope.

   Syn: Motive; incentive; spur; stimulus; impulse;
        encouragement.
        [1913 Webster]

WordNet (r) 3.0 (2006):

incitement
    n 1: an act of urging on or spurring on or rousing to action or
         instigating; "the incitement of mutiny" [syn: incitation,
         incitement]
    2: needed encouragement; "the result was a provocation of
       vigorous investigation" [syn: provocation, incitement]
    3: something that incites or provokes; a means of arousing or
       stirring to action [syn: incitement, incitation,
       provocation]
    4: the act of exhorting; an earnest attempt at persuasion [syn:
       exhortation, incitement]