A strong - smelling gum resin from the stems of a plant(Dorema ammoniacum)of western Asia,formerly used in perfumery and in medicine as an expectorant and a stimulant.

• 氨草胶西亚的一种取自植物茎中的、有强烈味道的胶性树脂（氨草胶），以前用来制造香水和药物，如去痰药和兴奋剂