drug2 past tense and past participle drugged, present participle drugging [transitive]
to give a person or animal a drug, especially in order to make them feel tired or go to sleep, or to make them perform well in a race:
Johnson drugged and attacked four women.
There was no evidence that the horse had been drugged.
to put drugs in someone's food or drink in order to make them feel tired or go to sleep [= spike]:
The wine had been drugged.
3 especially British EnglishMDMDD
to have taken a lot of illegal drugs, or to have been given a lot of medicine:
She was in pain, despite being drugged up to the eyeballs.