Dope

v. t.
  1. To treat or affect with dope; as, to dope nitroglycerin;
  2. To judge or guess; to predict the result of, as by the aid of dope.
  3. to impregnate with a dopant.
    1. To give stupefying drugs to; to drug.
    2. To administer a stimulant to (a horse) to increase his speed. It is a serious offense against the laws of racing.