"doping" in the verb sense
1. dope
take drugs to improve one's athletic performance
2. dope
add impurities to (a semiconductor) in order to produce or modify its properties
"The resistors have been doped"
3. dope, dope up
give a narcotic to
"The athletes were dope by the coach before the race"
Source: WordNet® (An amazing lexical database of English)
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