资料来源 : Webster's Revised Unabridged Dictionary (1913)

Coupling \Coup"ling\ (-l?ng), n.
   1. The act of bringing or coming together; connection; sexual
      union.

   2. (Mach.) A device or contrivance which serves to couple or
      connect adjacent parts or objects; as, a belt coupling,
      which connects the ends of a belt; a car coupling, which
      connects the cars in a train; a shaft coupling, which
      connects the ends of shafts.

   {Box coupling}, {Chain coupling}. See under {Box}, Chain.

   {Coupling box}, a coupling shaped like a journal box, for
      clamping together the ends of two shafts, so that they may
      revolve together.

   {Coupling pin}, a pin or bolt used in coupling or joining
      together railroad cars, etc.