three-way switch(n = noun.artifact) three-point switch - an electric switch that has three terminals; used to control a circuit from two different locations;
is a kind of electric switch, electrical switch, switch

bait and switch, dip switch, dual inline package switch, electric switch, electrical switch, ignition switch, knife switch, on-off switch, on/off switch, point switch, selector switch, split switch, switch, switch cane, switch engine, switch grass, switch off, switch on, switch over, three-point switch, three-way, three-way calling, toggle switch, underload switch