The Collaborative International Dictionary of English v.0.48:

Inducement \In*duce"ment\, n. [From Induce.]
   [1913 Webster]
   1. The act of inducing, or the state of being induced.
      [1913 Webster]

   2. That which induces; a motive or consideration that leads
      one to action or induces one to act; as, reward is an
      inducement to toil. "Mark the inducement." --Shak.
      [1913 Webster]

   3. (Law) Matter stated by way of explanatory preamble or
      introduction to the main allegations of a pleading; a
      leading to.
      [1913 Webster]

   Syn: Motive; reason; influence. See Motive.
        [1913 Webster]

WordNet (r) 3.0 (2006):

inducement
    n 1: a positive motivational influence [syn: incentive,
         inducement, motivator] [ant: deterrence,
         disincentive]
    2: act of bringing about a desired result; "inducement of sleep"
       [syn: inducement, inducing]

Moby Thesaurus II by Grady Ward, 1.0:

108 Moby Thesaurus words for "inducement":
   Trinkgeld, agacerie, allure, allurement, appeal, attraction,
   attractiveness, bait, beguilement, beguiling, bewitchery,
   bewitchment, blandishment, bonus, bounty, bribe, cajolement,
   cajolery, captivation, carrot, charisma, charm, charmingness,
   coaxing, come-hither, come-on, conning, consideration, donative,
   double time, enchantment, encouragement, engagement, enlistment,
   enthrallment, enticement, entrapment, exhortation, fascination,
   fee, fillip, flirtation, forbidden fruit, glamour, gratuity, gravy,
   grease, honorarium, hortation, incentive, incentive pay,
   incitement, interest, inveiglement, invitation, jawboning,
   lagniappe, largess, liberality, lobbying, lure, magnetism,
   palm oil, payment, percentage, perks, perquisite, persuasion,
   persuasive, pourboire, preaching, preachment, premium, profit,
   provocation, reward, sales talk, salesmanship, salve, seducement,
   seduction, seductiveness, selling, sex appeal, snaring, snow job,
   soft soap, solicitation, something extra, sportula, spur,
   stimulation, stimulative, stimulus, suasion, sweet talk, sweetener,
   sweetening, tantalization, temptation, tip, wheedling, whet,
   winning ways, winsomeness, witchery, wooing, working on



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

INDUCEMENT, pleading. The statement of matter which is introductory to the
principal subject of the declaration or plea, &c., but which is necessary to
explain and elucidate it; such matter as is not introductory to or necessary
to elucidate the substance or gist of the declaration or plea, &c. nor is
collaterally applicable to it, not being inducement but surplusage.
Inducement or conveyance, which. are synonymous terms, is in the nature of a
preamble to an act of assembly, and leads to the Principal subject of the
declaration or plea, &c. the same as that does to the purview or providing
clause of the act. For instance, in an action for a nuisance to property in
the possession of the plaintiff, the circumstance of his being possessed of
the property should be stated as inducement, or byway of introduction to the
mention of the nuisance. Lawes, Pl. 66, 67; 1 Chit. Pl. 292; Steph. Pl. 257;
14 Vin. Ab. 405; 20 Id. 845; Bac. Ab. Pleas. &c. I 2.



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

INDUCEMENT, contracts, evidence. The moving cause of an action.
     2. In contracts, the benefit.which the obligor is to receive is the
inducement to making them. Vide Cause; Consideration.
     3. When a person is charged with a crime, he is sometimes induced to
make confessions by the flattery of hope, or the torture of fear. When such
confessions are made in consequence of promises or threats by a person in
authority, they cannot be received in evidence. In England a distinction has
been made between temporal and spiritual inducements; confessions made under
the former are not receivable in evidence, while the latter may be admitted.
Joy on Conf. ss. 1 and 4.