Source : Webster's Revised Unabridged Dictionary (1913)

Accouplement \Ac*cou"ple*ment\ (-k[u^]p"'l*ment), n. [Cf. F.
   accouplement.]
   1. The act of coupling, or the state of being coupled; union.
      [R.] --Caxton.

   2. That which couples, as a tie or brace. [R.]