definition of
tripper

[1] #1 tripper n. (slang) someone who has taken a psychedelic drug and is undergoing hallucinations. wn

[2] #2 tripper n. [stumbler] a walker or runner who trips and almost falls. wn

[3] #3 tripper n. [sightseer, excursionist, rubberneck] a tourist who is visiting sights of interest. wn

[4] #4 tripper n. [trip] a catch mechanism that acts as a switch; "the pressure activates the tripper and releases the water". wn