coupling

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cou·pling / ˈkəp(ə)ling/ • n. 1. a device for connecting parts of machinery. ∎  a fitting on the end of a railroad vehicle for connecting it to another.2. the pairing of two items. ∎  sexual intercourse. ∎  an interaction between two electrical components by electromagnetic induction, electrostatic charge, or optical link.

coupling

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