1. a device that connects two parts of something
Usage: mechanical
2. the action of joining or combining two things together
3. a device that connects railroad cars
Usage: railroad

Examples

• The coupling between the train cars broke during the journey.
• The plumber installed a new coupling to connect the pipes.
• The coupling of these two ideas created an innovative solution.
• Check the coupling on the garden hose before watering.
• The railroad worker inspected each coupling before departure.
• The coupling mechanism allows the parts to rotate freely.