The Collaborative International Dictionary of English v.0.48:

lontar \lontar\ n.
   A tall fan palm (Borassus flabellifer) of Africa and India
   and Malaysia yielding a hard wood and sweet sap that is a
   source of palm wine and sugar; the palmyra; -- its leaves
   are used for thatching and weaving.

   Syn: palmyra, palmyra palm, toddy palm, wine palm, longar
        palm, Borassus flabellifer.
        [WordNet 1.5]

The Collaborative International Dictionary of English v.0.48:

Borassus \Borassus\ n.
   a genus of palm trees including the palmyra (Borassus
   flabellifer, formerly Borassus flabelliformis).

   Syn: genus Borassus.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Borassus flabellifer
    n 1: tall fan palm of Africa and India and Malaysia yielding a
         hard wood and sweet sap that is a source of palm wine and
         sugar; leaves used for thatching and weaving [syn:
         palmyra, palmyra palm, toddy palm, wine palm,
         lontar, longar palm, Borassus flabellifer]