"grá" meaning in Icelandic

{
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "grár"
      },
      "expansion": "grár",
      "name": "m"
    }
  ],
  "etymology_text": "See grár.",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "adjective form"
      },
      "expansion": "grá",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Icelandic entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "grár"
        }
      ],
      "glosses": [
        "feminine nominative singular positive degree of grár"
      ],
      "id": "en-grá-is-adj-Cn2lUJtd",
      "links": [
        [
          "grár",
          "grár#Icelandic"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "nominative",
        "positive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/krauː/"
    }
  ],
  "word": "grá"
}

{
  "categories": [
    "Old Norse adjective forms",
    "Old Norse entries with incorrect language header",
    "Old Norse non-lemma forms"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "is",
        "2": "grár"
      },
      "expansion": "grár",
      "name": "m"
    }
  ],
  "etymology_text": "See grár.",
  "head_templates": [
    {
      "args": {
        "1": "is",
        "2": "adjective form"
      },
      "expansion": "grá",
      "name": "head"
    }
  ],
  "lang": "Icelandic",
  "lang_code": "is",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Icelandic 1-syllable words",
        "Icelandic adjective forms",
        "Icelandic entries with incorrect language header",
        "Icelandic non-lemma forms",
        "Icelandic terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "word": "grár"
        }
      ],
      "glosses": [
        "feminine nominative singular positive degree of grár"
      ],
      "links": [
        [
          "grár",
          "grár#Icelandic"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "nominative",
        "positive",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/krauː/"
    }
  ],
  "word": "grá"
}