Definitions

1. noun

A device that connects or joins two things together, especially railway carriages or telegraph wires.

“The new coupler allowed the two trains to be joined safely.”

2. noun

A pair of mating components that fit together to form a connection.

“The coupler on the plug didn’t fit the socket.”

3. noun

A device that connects a television or other electronic equipment to a source of power or a different device.

“The coupler on the TV was damaged and needed to be replaced.”

4. verb

To join or connect two things together.

“The engineer coupler the two sections of track together.”