The Collaborative International Dictionary of English v.0.48:

Allude \Al*lude"\, v. i. [imp. & p. p. Alluded; p. pr. & vb.
   n. Alluding.] [L. alludere to play with, to allude; ad +
   ludere to play.]
   To refer to something indirectly or by suggestion; to have
   reference to a subject not specifically and plainly
   mentioned; -- followed by to; as, the story alludes to a
   recent transaction.
   [1913 Webster]

         These speeches . . . do seem to allude unto such
         ministerial garments as were then in use. --Hooker.
   [1913 Webster]

   Syn: To refer; point; indicate; hint; suggest; intimate;
        signify; insinuate; advert. See Refer.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Allude \Al*lude"\, v. t.
   To compare allusively; to refer (something) as applicable.
   [Obs.] --Wither.
   [1913 Webster]

WordNet (r) 3.0 (2006):

allude
    v 1: make a more or less disguised reference to; "He alluded to
         the problem but did not mention it" [syn: allude,
         touch, advert]