1. to disconnect or separate things that were joined together
2. to disconnect railroad cars from each other
Usage: railroad terminology

Examples

• The engineer uncouples the freight cars at the switching yard.
• She uncouples the garden hose from the spigot.
• The mechanic uncouples the trailer from the truck.
• He uncouples the power cable before moving the equipment.
• The train conductor uncouples the last car before departure.
• The technician uncouples the components for maintenance.