balm-of-gilead

noun

1. any of several plants of the genus Commiphora, especially C. opobalsamum and C. meccanensis, which yield a fragrant oleoresin.
2. Also called Mecca balsam. the resin itself, a turbid yellow, green, or brownish-red water-insoluble gluey liquid, used chiefly in perfumery.
3. a hybrid North American poplar, Populus gileadensis, cultivated as a shade tree.