connector

ot noun

1. One who connects.
2. A device (or, more precisely, a mating pair of devices, often a plug and a socket) for connecting together two wires, cables, or hoses, allowing electricity or fluid to flow but also allowing easy disconnection and reconnection when necessary.
3. A highway or freeway road which connects to another highway or freeway. It can be part of an interchange or a longer roadway such as the 1.5 mile (2.5 kilometer) U.S. Route 24 Connector.
4. A line connecting two shapes in presentation software.