DRUG, noun [See the verb, to dry.]

1. The general name of substances used in medicine, sold by the druggist, and compounded by apothecaries and physicians; any substance, vegetable, animal or mineral, which is used in the composition or preparation of medicines. It is also applied to dyeing materials.

2. Any commodity that lies on hand, or is not salable; an article of slow sale, or in no demand in market.

3. A mortal drug or a deadly drug is poison.

4. A drudge.

DRUG, verb intransitive To prescribe or administer drugs or medicines.

DRUG, verb transitive

1. To season with drugs or ingredients.

2. To tincture with something offensive.