DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   nervure
       n 1: any of the vascular bundles or ribs that form the branching
            framework of conducting and supporting tissues in a leaf or
            other plant organ [syn: vein, nervure]
       2: one of the horny ribs that stiffen and support the wing of an
          insect [syn: vein, nervure]