noun

• (uncountable) Any viscous liquid or paste, such as a lubricant, used in preparing a surface.
  "Use a good pipe dope on the NPT threads. When applying pipe dope do not put any on the first two threads from the end. Always put dope on the male thread—never on the female thread."
• (uncountable) An absorbent material used to hold a liquid.
• (uncountable, aeronautics) Any varnish used to coat a part, such as an airplane wing or a hot-air balloon in order to waterproof, strengthen, etc.
• (uncountable, slang) Any of various recreational substances:
  "Do you remember me? / How we used to be / Helpless and happy and blind? / Sunk without hope / In a haze of good dope / And cheap wine?"

verb

• (transitive, slang) To affect with drugs.
  "Cecil Winwood accepted the test. He claimed that he could dope the guards the night of the break. "Talk is cheap," said Long Bill Hodge. "What we want is the goods. Dope one of the guards to-night.""
• (transitive) To treat with dope (lubricant, etc.).
• (transitive, electronics) To add a dopant such as arsenic to (a pure semiconductor such as silicon).
  "Another way to dope semiconductors is to use materials like boron, in which each atom has one fewer valence electron than does a sillicon atom."
• (intransitive, now chiefly sports) To use drugs; especially, to use prohibited performance-enhancing drugs (PEDs) in sporting competitions.
  "The more experienced cyclists, who doped or used to dope, transmitted the culture of doping to the younger cyclists, teaching them doping methods and suggesting which substances to use."

adj

• (slang) Amazing; cool.
  "That party was dope!"

noun

• (military) Acronym of data on previous engagement.