xylobalsamum

from The Century Dictionary.

• noun The wood, or particularly the dried twigs, of the balm-of-Gilead tree, Commiphora Opobalsamum.
• noun The balsam obtained by decoction from this wood.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Med.) The dried twigs of a Syrian tree (Balsamodendron Gileadense).

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the dried twigs or fragrant wood of balm of Gilead (or balsam of Mecca)