What is Steampunk?

steam·punk
ˈstēmˌpəNGk/

noun
  1. a genre of science fiction that has a historical setting and typically features steam-powered machinery rather than advanced technology.
    • a style of design and fashion that combines historical elements with anachronistic technological features inspired by science fiction.
      “the essence of steampunk is homage to vintage fashion with a modern, sassy twist”  See: Wikipedia