The Collaborative International Dictionary of English v.0.48:

Palmyra \Pal*my"ra\, n. (Bot.)
   A species of palm (Borassus flabelliformis) having a
   straight, black, upright trunk, with palmate leaves. It is
   found native along the entire northern shores of the Indian
   Ocean, from the mouth of the Tigris to New Guinea. More than
   eight hundred uses to which it is put are enumerated by
   native writers. Its wood is largely used for building
   purposes; its fruit and roots serve for food, its sap for
   making toddy, and its leaves for thatching huts.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jaggery \Jag"ger*y\ (j[a^]g"g[~e]r*[y^]), n. [Hind
   j[=a]gr[imac]. Cf. Sugar.]
   Raw palm sugar, made in the East Indies by evaporating the
   fresh juice of several kinds of palm trees, but specifically
   those of the palmyra (Borassus flabelliformis) and jaggery
   palm (Caryota urens). [Written also jagghery and
   jaggary.]
   [1913 Webster]

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]