The Collaborative International Dictionary of English v.0.48:

Poonga oil \Poon"ga oil`\
   A kind of oil used in India for lamps, and for boiling with
   dammar for pitching vessels. It is pressed from the seeds of
   a leguminous tree (Pongamia glabra).
   [1913 Webster]

WordNet (r) 3.0 (2006):

Pongamia glabra
    n 1: evergreen Asiatic tree having glossy pinnate leaves and
         racemose creamy-white scented flowers; used as a shade tree
         [syn: Indian beech, Pongamia glabra]