The Collaborative International Dictionary of English v.0.48:

Matchmaker \Match"mak`er\, n.
   1. One who makes matches for burning or kinding.
      [1913 Webster]

   2. One who tries to bring about marriages.
      [1913 Webster]

WordNet (r) 3.0 (2006):

matchmaker
    n 1: someone who arranges (or tries to arrange) marriages for
         others [syn: matchmaker, matcher, marriage broker]

The Free On-line Dictionary of Computing (30 December 2018):

Matchmaker

   A language for specifying and automating the generation of
   multi-lingual interprocess communication interfaces.  MIG is
   an implementation of a subset of Matchmaker.

   (1994-11-22)