Answer: coupling

AnswerCrossword Clue
COUPLINGComing together
couplingA device for connecting parts of machinery
couplingAn interaction between two electrical components by electromagnetic induction, electrostatic charge, or optical link
couplingEach such item
couplingThe arrangement of items on a musical recording
couplingA fitting on the end of a railroad vehicle for connecting it to another
couplinga joining device
couplingSexual intercourse
couplingThe pairing of two items