coupling in English
- coupling⇄coupling, noun.
1. the act or process of joining together.
Ex. The coupling and uncoupling of railroad cars usually requires an engine.
2. a device for joining together parts of machinery, such as the ends of shafts, especially in order - coupling⇄friction clutch orcoupling
a device for transmitting motion by frictional contact. It is used where it is desirable to engage or disengage moving parts gradually and smoothly, as when shifting gears.