Definitions:
a device for making and breaking the connection in an electric circuit

an act of changing to or adopting one thing in place of another

a slender, flexible shoot cut from a tree.

a set of points on a railway track.

a tress of false or detached hair tied at one end, used in hairdressing to supplement natural hair.

change the position, direction, or focus of

beat or flick with or as if with a switch.