"Grímr" meaning in Old Norse

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "is",
            "2": "Grímur"
          },
          "expansion": "Icelandic: Grímur",
          "name": "desc"
        }
      ],
      "text": "Icelandic: Grímur"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fo",
            "2": "Grímur"
          },
          "expansion": "Faroese: Grímur",
          "name": "desc"
        }
      ],
      "text": "Faroese: Grímur"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "non",
        "2": "gem-pro",
        "3": "*Grīmaz"
      },
      "expansion": "Proto-Germanic *Grīmaz",
      "name": "inh"
    }
  ],
  "etymology_text": "Probably derived from Old Norse gríma (“a kind of face mask”), or from Proto-Germanic *Grīmaz.",
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Grímr m",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Norse entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Norse entries with language name categories using raw markup",
          "parents": [
            "Entries with language name categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Old Norse given names",
          "parents": [
            "Given names",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "name": "Old Norse male given names",
          "parents": [
            "Male given names",
            "Given names",
            "Names",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Fundamental",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Old Norse names for Odin",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "a male given name, especially one of Óðinn's names"
      ],
      "id": "en-Grímr-non-name-XWmQ~AH4",
      "links": [
        [
          "given name",
          "given name"
        ],
        [
          "Óðinn",
          "Óðinn"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "Grímr"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "is",
            "2": "Grímur"
          },
          "expansion": "Icelandic: Grímur",
          "name": "desc"
        }
      ],
      "text": "Icelandic: Grímur"
    },
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "fo",
            "2": "Grímur"
          },
          "expansion": "Faroese: Grímur",
          "name": "desc"
        }
      ],
      "text": "Faroese: Grímur"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "non",
        "2": "gem-pro",
        "3": "*Grīmaz"
      },
      "expansion": "Proto-Germanic *Grīmaz",
      "name": "inh"
    }
  ],
  "etymology_text": "Probably derived from Old Norse gríma (“a kind of face mask”), or from Proto-Germanic *Grīmaz.",
  "head_templates": [
    {
      "args": {
        "1": "non",
        "2": "proper noun",
        "g": "m"
      },
      "expansion": "Grímr m",
      "name": "head"
    }
  ],
  "lang": "Old Norse",
  "lang_code": "non",
  "pos": "name",
  "senses": [
    {
      "categories": [
        "Old Norse entries with incorrect language header",
        "Old Norse entries with language name categories using raw markup",
        "Old Norse given names",
        "Old Norse lemmas",
        "Old Norse male given names",
        "Old Norse masculine nouns",
        "Old Norse names for Odin",
        "Old Norse proper nouns",
        "Old Norse terms derived from Proto-Germanic",
        "Old Norse terms inherited from Proto-Germanic",
        "Pages with 1 entry"
      ],
      "glosses": [
        "a male given name, especially one of Óðinn's names"
      ],
      "links": [
        [
          "given name",
          "given name"
        ],
        [
          "Óðinn",
          "Óðinn"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "word": "Grímr"
}