Read the dictionary definition of dope. All definitions for this word.
1. street names for marijuana
2. slang terms for inside information
1. is that the straight dope?
3. carbonated drink flavored with extract from kola nuts (`dope' is a southernism in the United States)
4. an ignorant or foolish person
5. give a narcotic to
1. The athletes were dope by the coach before the race
6. add impurities to (a semiconductor) in order to produce or modify its properties
1. The resistors have been doped
7. take drugs to improve one's athletic performance
See also: Merriam-Webster definition of dope