The Collaborative International Dictionary of English v.0.48:

Xylobalsamum \Xy`lo*bal"sa*mum\, n. [NL., fr. Gr. xy`lon wood +
   ba`lsamon the balsam tree, balsam; cf. L. xylobalsamum balsam
   wood, Gr. xyloba`lsamon.] (Med.)
   The dried twigs of a Syrian tree (Balsamodendron
   Gileadense). --U. S. Disp.
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The Collaborative International Dictionary of English v.0.48:

Balm \Balm\ (b[aum]m), n. [OE. baume, OF. bausme, basme, F.
   baume, L. balsamum balsam, from Gr. ba`lsamon; perhaps of
   Semitic origin; cf. Heb. b[=a]s[=a]m. Cf. Balsam.]
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   1. (Bot.) An aromatic plant of the genus Melissa.
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   2. The resinous and aromatic exudation of certain trees or
      shrubs. --Dryden.
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   3. Any fragrant ointment. --Shak.
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   4. Anything that heals or that mitigates pain. "Balm for each
      ill." --Mrs. Hemans.
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   Balm cricket (Zool.), the European cicada. --Tennyson.

   Balm of Gilead (Bot.), a small evergreen African and
      Asiatic tree of the terebinthine family (Balsamodendron
      Gileadense). Its leaves yield, when bruised, a strong
      aromatic scent; and from this tree is obtained the balm of
      Gilead of the shops, or balsam of Mecca. This has a
      yellowish or greenish color, a warm, bitterish, aromatic
      taste, and a fragrant smell. It is valued as an unguent
      and cosmetic by the Turks. The fragrant herb
      Dracocephalum Canariense is familiarly called balm of
      Gilead, and so are the American trees, Populus
      balsamifera, variety candicans (balsam poplar), and
      Abies balsamea (balsam fir).
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