Definition of drug

• v. i. - To drudge; to toil laboriously.
• n. - A drudge (?).
• n. - Any animal, vegetable, or mineral substance used in the composition of medicines; any stuff used in dyeing or in chemical operations.
• n. - Any commodity that lies on hand, or is not salable; an article of slow sale, or in no demand.
• v. i. - To prescribe or administer drugs or medicines.
• v. t. - To affect or season with drugs or ingredients; esp., to stupefy by a narcotic drug. Also Fig.
• v. t. - To tincture with something offensive or injurious.
• v. t. - To dose to excess with, or as with, drugs.