"millenial" meaning in Spanish

{
  "forms": [
    {
      "form": "millenials",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mfbysense",
        "2": "#s"
      },
      "expansion": "millenial m or f by sense (plural millenials)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "millennial"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish masculine and feminine nouns by sense",
          "parents": [
            "Masculine and feminine nouns by sense",
            "Nouns by gender",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative spelling of millennial"
      ],
      "id": "en-millenial-es-noun-7hVWseCR",
      "links": [
        [
          "millennial",
          "millennial#Spanish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "by-personal-gender",
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "millenial"
}

{
  "forms": [
    {
      "form": "millenials",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "mfbysense",
        "2": "#s"
      },
      "expansion": "millenial m or f by sense (plural millenials)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "millennial"
        }
      ],
      "categories": [
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish masculine and feminine nouns by sense",
        "Spanish masculine nouns",
        "Spanish nouns",
        "Spanish nouns with multiple genders"
      ],
      "glosses": [
        "Alternative spelling of millennial"
      ],
      "links": [
        [
          "millennial",
          "millennial#Spanish"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "by-personal-gender",
        "feminine",
        "masculine"
      ]
    }
  ],
  "word": "millenial"
}