N the bark of a South American apocynaceous tree, Geissospermum vellosii: source of a substance formerly used for treating malaria (旧时用来治疗疟疾的)巴西边子木树皮
N（名词） the bark of a South American apocynaceous tree, Geissospermum vellosii: source of a substance formerly used for treating malaria (旧时用来治疗疟疾的)巴西边子木树皮