in-joke

美 [ˈɪn dʒoʊk]英 [ˈɪn dʒəʊk]
  • n.圈子里的笑话;行内笑话
in-jokein-joke

noun

圈子里的笑话;行内笑话
a joke that is only understood by a particular group of people

noun

1
a joke that is appreciated only by members of some particular group of people

数据来源:WordNet