Noun
1. control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit
2. an event in which one thing is substituted for another;
"the replacement of lost blood by a transfusion of donor blood"3. hairpiece consisting of a tress of false hair; used by women to give shape to a coiffure
4. railroad track having two movable rails and necessary connections; used to turn a train from one track to another or to store rolling stock
5. a flexible implement used as an instrument of punishment
6. a basketball maneuver; two defensive players shift assignments so that each guards the player usually guarded by the other
7. the act of changing one thing or position for another;
"his switch on abortion cost him the election"Verb
1. change over, change around, or switch over
2. exchange or give (something) in exchange for
3. lay aside, abandon, or leave for another;
"switch to a different brand of beer""She switched psychiatrists""The car changed lanes"4. make a shift in or exchange of;
"First Joe led; then we switched"5. cause to go on or to be engaged or set in operation;
"switch on the light""throw the lever"6. flog with or as if with a flexible rod
7. reverse (a direction, attitude, or course of action)