switcher

switch +‎ -er

switcher (plural switchers)

1. One who or that which switches.
   • 1984, John Martin Robinson, The latest country houses (page 32)

     They all love frugality and conservation; they are manic savers of bits of string and switchers-off of lights.

   • 2011, David Pogue, iPhone: The Missing Manual (page 14)

     In short, the task switcher gives you a way to jump directly to another app, without a layover at the Home screen first.

2. (electronics) A switchmode power supply.
3. (rail transport, US) A railway locomotive used for shunting; a shunter.

• shunter (Britain)

• road switcher

• Wicherts, Witchers, witchers