"hei" meaning in Norwegian Bokmål

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "hei"
      },
      "expansion": "Old Norse hei",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse hei.",
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "interjection"
      },
      "expansion": "hei",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "intj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "88 12",
          "kind": "topical",
          "langcode": "nb",
          "name": "Greetings",
          "orig": "nb:Greetings",
          "parents": [
            "Social acts",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "word": "heie"
        }
      ],
      "examples": [
        {
          "english": "hi!",
          "text": "hei!"
        }
      ],
      "glosses": [
        "hi (greeting)"
      ],
      "id": "en-hei-nb-intj-QbFlB1lK",
      "links": [
        [
          "hi",
          "hi"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/hæɪ/"
    },
    {
      "rhymes": "-æɪ"
    }
  ],
  "word": "hei"
}

{
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "heiðr"
      },
      "expansion": "Old Norse heiðr",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse heiðr.",
  "forms": [
    {
      "form": "heia",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "heien",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "heier",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "heiene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "29 71",
          "kind": "place",
          "langcode": "nb",
          "name": "Landforms",
          "orig": "nb:Landforms",
          "parents": [
            "Earth",
            "Places",
            "Nature",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "a heath or moor"
      ],
      "id": "en-hei-nb-noun-W8aiBHm8",
      "links": [
        [
          "heath",
          "heath"
        ],
        [
          "moor",
          "moor#English"
        ]
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "hei"
}

{
  "categories": [
    "nb:Greetings",
    "nb:Landforms"
  ],
  "derived": [
    {
      "word": "heie"
    }
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "hei"
      },
      "expansion": "Old Norse hei",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse hei.",
  "head_templates": [
    {
      "args": {
        "1": "nb",
        "2": "interjection"
      },
      "expansion": "hei",
      "name": "head"
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "intj",
  "senses": [
    {
      "examples": [
        {
          "english": "hi!",
          "text": "hei!"
        }
      ],
      "glosses": [
        "hi (greeting)"
      ],
      "links": [
        [
          "hi",
          "hi"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/hæɪ/"
    },
    {
      "rhymes": "-æɪ"
    }
  ],
  "word": "hei"
}

{
  "categories": [
    "nb:Greetings",
    "nb:Landforms"
  ],
  "etymology_number": 2,
  "etymology_templates": [
    {
      "args": {
        "1": "nb",
        "2": "non",
        "3": "heiðr"
      },
      "expansion": "Old Norse heiðr",
      "name": "der"
    }
  ],
  "etymology_text": "From Old Norse heiðr.",
  "forms": [
    {
      "form": "heia",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "heien",
      "tags": [
        "definite",
        "singular"
      ]
    },
    {
      "form": "heier",
      "tags": [
        "indefinite",
        "plural"
      ]
    },
    {
      "form": "heiene",
      "tags": [
        "definite",
        "plural"
      ]
    }
  ],
  "lang": "Norwegian Bokmål",
  "lang_code": "nb",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "a heath or moor"
      ],
      "links": [
        [
          "heath",
          "heath"
        ],
        [
          "moor",
          "moor#English"
        ]
      ],
      "tags": [
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "hei"
}