#1 tripper n. (slang) someone who has taken a psychedelic drug and is undergoing hallucinations. wn
#2 tripper n. [stumbler] a walker or runner who trips and almost falls. wn
#3 tripper n. [sightseer, excursionist, rubberneck] a tourist who is visiting sights of interest. wn
#4 tripper n. [trip] a catch mechanism that acts as a switch; "the pressure activates the tripper and releases the water". wn
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