0 used to greet sb -- hei
Hey Alyssa, how are you? Hei, Alyssa. Hvordan går det?
1 used to get sb’s attention -- hei
Hey! You dropped something. Hei! Du mistet noe.
2 a shout expressing joy, or a question, or used to attract attention -- hør her!; hallo!; Oj!; Ikke gjør det!
Hey! What are you doing there?