(derogatory, dated) A person who abuses drugs.

(derogatory) A person who frequently uses illicit, narcotic, or psychoactive drugs and has a drug addiction.

(uncountable) Any viscous liquid or paste, such as a lubricant, used in preparing a surface. / (uncountable) An absorbent material used to hold a liquid.

(transitive, slang) To affect with drugs. / (transitive) To treat with dope (lubricant, etc.). / (transitive, electronics) To add a dopant such as arsenic to (a pure semiconductor such as silicon).

(slang) Amazing; cool.

(materials science) A substance added in small amounts to a pure material, such as semiconductor, to alter its original electrical or optical properties; a doping agent

(biochemistry, pharmacology) A monoamine C₈H₁₁NO₂ that is a decarboxylated form of dopa, present in the body as a neurotransmitter and a precursor of other substances including adrenalin.

Containing, involving, or transmitting dopamine. / Of or relating to dopamine.

(biochemistry) Any substance that affects the production of dopamine

plural of doper