coupler

Etymology
From.

Noun

 * 1)  Someone who couples things together, especially someone whose job it is to couple railway carriages.
 * 2) Anything that serves to couple things together; but especially a device that couples railway carriages.
 * 3)  A device that connects two keyboards of an organ together so that they play together.
 * 4) A device used to convert electronic information into audible sound signals for transmission over telephone lines.
 * 5) An electrical device used to transfer energy from one electric device to another, especially without a physical connection.

Translations

 * Bulgarian:
 * Norwegian:
 * Bokmål:

Etymology
From. Doublet of the borrowed.

Verb

 * 1)  to couple