- [noun] (slang) someone who has taken a psychedelic drug and is undergoing hallucinations
- [noun] a walker or runner who trips and almost falls
- [noun] a tourist who is visiting sights of interest
Synonyms: sightseer, excursionist, rubberneck
- [noun] a catch mechanism that acts as a switch; "the pressure activates the tripper and releases the water"
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