The Collaborative International Dictionary of English v.0.48:

Allusive \Al*lu"sive\, a.
   1. Figurative; symbolical.
      [1913 Webster]

   2. Having reference to something not fully expressed;
      containing an allusion.
      [1913 Webster]

WordNet (r) 3.0 (2006):

allusive
    adj 1: characterized by indirect references; "allusive speech is
           characterized by allusions"

Moby Thesaurus II by Grady Ward, 1.0:

20 Moby Thesaurus words for "allusive":
   allusory, figurative, figured, flowery, implicational, implicative,
   implicatory, indicative, inferential, insinuating, insinuative,
   insinuatory, ironic, mannered, metaphorical, ornamented,
   referential, suggestive, trolatitious, tropological