a) 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.
b) 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) .
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