Definition of "Dope" :

noun: street names for marijuana

noun: slang terms for inside information

"Is that the straight dope?."

noun: carbonated drink flavored with extract from kola nuts (dope' is a southernism in the United States)

noun: an ignorant or foolish person

verb: give a narcotic to

"The athletes were dope by the coach before the race."

verb: add impurities to (a semiconductor) in order to produce or modify its properties

"The resistors have been doped."

verb: take drugs to improve one's athletic performance