medicinal
adjective uk/məˈdɪs.ɪ.nəl/ us/məˈdɪs.ɪ.nəl/
药用的，用于治疗的
Medicinal substances are used to cure illnesses.
I keep a bottle of brandy purely for medicinal purposes. 我留着一瓶白兰地，完全是为了药用。
It is said that the spring water has medicinal properties. 据说这泉水有医疗功效。