coupling

noun

1
the act of pairing a male and female for reproductive purposes
the casual couplings of adolescents
the mating of some species occurs only in the spring
2
a mechanical device that serves to connect the ends of adjacent objects
3
a connection (like a clamp or vise) between two things so they move together

Also useful for “coupling”:Unscrambler— Rearrange the letters in “coupling”