The Collaborative International Dictionary of English v.0.48:

Inveigle \In*vei"gle\, v. t. [imp. & p. p. Inveigled; p. pr. &
   vb. n. Inveigling.] [Prob. fr. F. aveugler to blind, to
   delude, OF. aveugler, avugler, avegler, fr. F. aveugle blind,
   OF. aveugle, avugle, properly, without eyes, fr. L. ab +
   oculus eye. The pref. in- seems to have been substituted for
   a- taken as the pref. F. [`a], L. ad. See Ocular.]
   To lead astray as if blind; to persuade to something evil by
   deceptive arts or flattery; to entice; to insnare; to seduce;
   to wheedle.
   [1913 Webster]

         Yet have they many baits and guileful spells
         To inveigle and invite the unwary sense. --Milton.
   [1913 Webster]

WordNet (r) 3.0 (2006):

inveigle
    v 1: influence or urge by gentle urging, caressing, or
         flattering; "He palavered her into going along" [syn:
         wheedle, cajole, palaver, blarney, coax, sweet-
         talk, inveigle]