/ ˈkʌplɪŋ; NAmE / noun
1.
[ usually sing. ] an action of joining or combining two things :
a coupling of Mozart's Prague Symphony and Schubert's Unfinished Symphony (= for example, on the same CD)
2.
( formal ) an act of having sex :
illicit couplings
3.
( technical ) a thing that joins together two parts of sth, two vehicles or two pieces of equipment