The Collaborative International Dictionary of English v.0.48:

Genip \Gen"ip\, n., or Genip tree \Genip tree\
   1. Any tree or shrub of the genus Genipa.
      [Webster 1913 Suppl.]

   2. The West Indian sapindaceous tree Melicocca bijuga,
      which yields the honeyberry; also, the related trees
      Exothea paniculata and E. trifoliata; called also
      ginep.

   Syn: Spanish lime, Spanish lime tree, honey berry,
        mamoncillo, Melicocca bijuga, Melicocca bijugatus.
        [Webster 1913 Suppl.]