guru n.
1. (drugs) a guide or caretaker during a hallucinogenic experience. Such a person is either not taking the drug or is veteran user.
![[US]](/static/img/flags/us.png "United States") | Drugs from A to Z (1970). | |
| in AS LVII:4 289: A guide does not use drugs during parties but serves as a controller, known variously as groundman, babysitter, tour guide, co-pilot, ground control, guru, travel agent, or just sitter. |
2. (US campus) an expert.
| Campus Sl. Nov. 4: guru – an expert: My man is a bowling guru. | |
 | Body Made of Glass 76: [P]robiotic supplements, recipe books offering ‘good mood food’ and dubious ‘gut health’ gurus already thriving. |