opener - definition and synonyms

 
noun [countable] 

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/ˈəʊp(ə)nə(r)/
singularopener
pluralopeners
  1. 2
    the first game in a sports season or in a competition consisting of several games

    the season opener

    1. a.
      the first goal scored in a match
    2. b.
      the first act in a performance that has several acts