n. A machine used to trip or unload a belt-conveyer.n. One who trips or moves nimbly; also, one who stumbles, or who causes another to do so.n. An excursionist; a tourist.n. A street-railroad conductor or driver who is paid according to the number of trips which he makes, or who is employed to make special trips, as in the place of others who are laid off for any cause.n. In mach., a part which causes another part to be suddenly released, or to trip.