Source : Webster's Revised Unabridged Dictionary (1913)

Couplement \Cou"ple*ment\ (k?p"'l-ment), n. [Cf. OF.
   couplement.]
   Union; combination; a coupling; a pair. [Obs.] --Shak.

         And forth together rode, a goodly couplement.
                                                  --Spenser.