"eusko" meaning in Spanish

{
  "forms": [
    {
      "form": "euskos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "eusko m (plural euskos)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "eus‧ko"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Currency",
          "orig": "es:Currency",
          "parents": [
            "Money",
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "eusko"
      ],
      "id": "en-eusko-es-noun-yJR9lQNK",
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeusko/"
    },
    {
      "ipa": "[ˈeu̯s.ko]"
    },
    {
      "rhymes": "-eusko"
    }
  ],
  "word": "eusko"
}

{
  "forms": [
    {
      "form": "euskos",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "eusko m (plural euskos)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "eus‧ko"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Spanish/eusko",
        "Rhymes:Spanish/eusko/2 syllables",
        "Spanish 2-syllable words",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish masculine nouns",
        "Spanish nouns",
        "Spanish terms spelled with K",
        "Spanish terms with IPA pronunciation",
        "es:Currency"
      ],
      "glosses": [
        "eusko"
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈeusko/"
    },
    {
      "ipa": "[ˈeu̯s.ko]"
    },
    {
      "rhymes": "-eusko"
    }
  ],
  "word": "eusko"
}