The Collaborative International Dictionary of English v.0.48:

Allure \Al*lure"\, v. t. [imp. & p. p. Alluded; p. pr. & vb.
   n. Alluring.] [OF. aleurrer, alurer, fr. a (L. ad) + leurre
   lure. See Lure.]
   To attempt to draw; to tempt by a lure or bait, that is, by
   the offer of some good, real or apparent; to invite by
   something flattering or acceptable; to entice; to attract.
   [1913 Webster]

         With promised joys allured them on.      --Falconer.
   [1913 Webster]

         The golden sun in splendor likest Heaven
         Allured his eye.                         --Milton.
   [1913 Webster]

   Syn: To attract; entice; tempt; decoy; seduce.

   Usage: To Allure, Entice, Decoy, Seduce. These words
          agree in the idea of acting upon the mind by some
          strong controlling influence, and differ according to
          the image under which is presented. They are all used
          in a bad sense, except allure, which has sometimes
          (though rarely) a good one. We are allured by the
          prospect or offer (usually deceptive) of some future
          good. We are commonly enticed into evil by appeals to
          our passions. We are decoyed into danger by false
          appearances or representations. We are seduced when
          drawn aside from the path of rectitude. What allures
          draws by gentle means; what entices leads us by
          promises and persuasions; what decoys betrays us, as
          it were, into a snare or net; what seduces deceives us
          by artful appeals to the passions.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Alluring \Al*lur"ing\, a.
   That allures; attracting; charming; tempting. --
   Al*lur"ing*ly, adv. -- Al*lur"ing*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

alluring
    adj 1: highly attractive and able to arouse hope or desire; "an
           alluring prospect"; "her alluring smile"; "the voice was
           low and beguiling"; "difficult to say no to an enticing
           advertisement"; "a tempting invitation" [syn: alluring,
           beguiling, enticing, tempting]

Moby Thesaurus II by Grady Ward, 1.0:

77 Moby Thesaurus words for "alluring":
   adductive, appealing, appetizing, attracting, attractive,
   attrahent, beguiling, bewitching, blandishing, cajoling,
   captivating, catching, challenging, charismatic, charming, coaxing,
   come-hither, coquettish, delusive, dragging, drawing, enchanting,
   encouraging, energizing, engaging, enravishing, enthralling,
   enticing, entrancing, exciting, exotic, fascinating, fetching,
   flirtatious, galvanic, galvanizing, glamorous, hypnotic,
   interesting, intriguing, inviting, irresistible, magnetic,
   magnetized, mesmeric, mouth-watering, piquant, prepossessing,
   prompting, provocative, provoking, provoquant, pulling, ravishing,
   rousing, seducing, seductive, siren, sirenic, spellbinding,
   spellful, stimulant, stimulating, stimulative, stirring,
   sympathetic, taking, tantalizing, teasing, tempting, tickling,
   titillating, titillative, tugging, winning, winsome, witching