The Collaborative International Dictionary of English v.0.48:

Dipteryx \Dipteryx\ n.
   a genus of tropical American trees which produce a black seed
   called the tonka bean.

   Syn: Coumarouna, genus Coumarouna, genus Dipteryx.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Dipteryx
    n 1: tropical American trees: tonka beans [syn: Coumarouna,
         genus Coumarouna, Dipteryx, genus Dipteryx]