Xy`lo·bal'sa·mum noun [ New Latin , from Greek xy`lon wood + ... the balsam tree, balsam; confer Latin xylobalsamum balsam wood, Greek ....] (Medicine) The dried twigs of a Syrian tree ( Balsamodendron Gileadense ). U. S. Disp. Found on http://www.encyclo.co.uk/webster/X/2