资料来源 : Webster's Revised Unabridged Dictionary (1913)

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}).

资料来源 : WordNet®

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