definition of
switch

[1] #1 switch v. [switch over, exchange] change over, change around, as to a new order or sequence. wn

[2] #2 switch n. [electric switch, electrical switch] control consisting of a mechanical or electrical or electronic device for making or breaking or changing the connections in a circuit. wn

[3] #3 switch v. [trade, swap, swop] exchange or give (something) in exchange for. wn

[4] #4 switch v. [shift, change] lay aside, abandon, or leave for another; "switch to a different brand of beer"; "She switched psychiatrists"; "The car changed lanes". wn

[5] #5 switch n. [substitution, permutation, transposition, replacement] an event in which one thing is substituted for another; "the replacement of lost blood by a transfusion of donor blood". wn