"mar Negro" meaning in Galicien

{
  "categories": [
    {
      "kind": "other",
      "name": "Compositions en galicien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms propres en galicien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Galicien",
      "orig": "galicien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de mar et de negro."
  ],
  "lang": "Galicien",
  "lang_code": "gl",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Mer Noire."
      ],
      "id": "fr-mar_Negro-gl-name-fAA7Fuge"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "mar Negro"
}

{
  "categories": [
    "Compositions en galicien",
    "Noms propres en galicien",
    "galicien"
  ],
  "etymology_texts": [
    "Composé de mar et de negro."
  ],
  "lang": "Galicien",
  "lang_code": "gl",
  "pos": "name",
  "pos_title": "Nom propre",
  "senses": [
    {
      "glosses": [
        "Mer Noire."
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "mar Negro"
}