a substance used as a medicine or used in a medicine 药；药物◆They are the world's largest drug company. 他们是世界上最大的制药公司。◆a blockbuster drug (= one that sells very well) 畅销药◆sales of prescription drugs (= drugs you can only buy with a written order from a doctor) 处方药销售➡copycat , drugmaker
an illegal substance that people use to give them pleasant or exciting feelings 毒品；麻醉药◆Drugs have been seized with a street value of two million dollars. 黑市价值二百万元的毒品已被查获。