The Collaborative International Dictionary of English v.0.48:

Bignoniaceae \Bignoniaceae\ n.
   a natural family comprising the trees or shrubs or woody
   vines or herbs having gourdlike or capsular fruit; the are
   sometimes placed in the order Scrophulariales.

   Syn: family Bignoniaceae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Bignoniaceae
    n 1: trees or shrubs or woody vines or herbs having fruit
         resembling gourds or capsules; sometimes placed in the
         order Scrophulariales [syn: Bignoniaceae, family
         Bignoniaceae]