"2.º" meaning in Spanish

{
  "forms": [
    {
      "form": "2.ª",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "2.ºˢ",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "2.ªˢ",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "f": "2.ª",
        "fpl": "2.ªˢ",
        "mpl": "2.ºˢ"
      },
      "expansion": "2.º (feminine 2.ª, masculine plural 2.ºˢ, feminine plural 2.ªˢ)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "segundo"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant target parameters",
          "parents": [
            "Links with redundant target parameters",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Abbreviation of segundo."
      ],
      "id": "en-2.º-es-adj-tKyg0ro2",
      "links": [
        [
          "segundo",
          "segundo#Spanish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "2.º"
}

{
  "forms": [
    {
      "form": "2.ª",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "2.ºˢ",
      "tags": [
        "masculine",
        "plural"
      ]
    },
    {
      "form": "2.ªˢ",
      "tags": [
        "feminine",
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "f": "2.ª",
        "fpl": "2.ªˢ",
        "mpl": "2.ºˢ"
      },
      "expansion": "2.º (feminine 2.ª, masculine plural 2.ºˢ, feminine plural 2.ªˢ)",
      "name": "es-adj"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "segundo"
        }
      ],
      "categories": [
        "Pages with 2 entries",
        "Spanish abbreviations",
        "Spanish adjectives",
        "Spanish entries with incorrect language header",
        "Spanish lemmas",
        "Spanish links with redundant alt parameters",
        "Spanish links with redundant target parameters",
        "Spanish links with redundant wikilinks",
        "Spanish terms spelled with .",
        "Spanish terms spelled with numbers",
        "Spanish terms spelled with º"
      ],
      "glosses": [
        "Abbreviation of segundo."
      ],
      "links": [
        [
          "segundo",
          "segundo#Spanish"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "word": "2.º"
}