coupling

US /ˈkʌp.lɪŋ/
UK /ˈkʌp.lɪŋ/
"coupling" picture
1.

the act of connecting or joining two things together

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The coupling of the train cars was completed quickly.
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The new system allows for the seamless coupling of different software modules.
:
connectionjoininglinkingattachmentunion
2.

a device that connects or joins two things together

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The mechanic replaced the worn-out coupling in the machine.
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Ensure the hose coupling is secure before turning on the water.
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connectorjointfastenerlinkclutch
3.

the act of two people or animals mating or having sexual intercourse

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The biologist observed the coupling of the birds during mating season.
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The documentary showed the intricate rituals leading up to the animal's coupling.
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matingcopulationpairingintercourse
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couple