Meaning : (slang) someone who has taken a psychedelic drug and is undergoing hallucinations.
Meaning : A walker or runner who trips and almost falls.
Synonyms : stumbler
Meaning : A tourist who is visiting sights of interest.
Synonyms : excursionist, rubberneck, sightseer
Meaning : A catch mechanism that acts as a switch.
Example :
The pressure activates the tripper and releases the water.
Synonyms : trip