"ochenta y uno" meaning in Spanish

{
  "forms": [
    {
      "form": "ochenta y una",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "before a noun ochenta y un",
      "tags": [
        "masculine"
      ]
    }
  ],
  "hyphenation": [
    "o‧chen‧ta"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Spanish cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "eighty-one"
      ],
      "id": "en-ochenta_y_uno-es-num-rVBwvKxM",
      "links": [
        [
          "eighty-one",
          "eighty-one"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/oˌt͡ʃenta i ˈuno/"
    },
    {
      "ipa": "[oˌt͡ʃẽn̪.t̪a i ˈu.no]"
    }
  ],
  "word": "ochenta y uno"
}

{
  "forms": [
    {
      "form": "ochenta y una",
      "tags": [
        "feminine"
      ]
    },
    {
      "form": "before a noun ochenta y un",
      "tags": [
        "masculine"
      ]
    }
  ],
  "hyphenation": [
    "o‧chen‧ta"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Spanish cardinal numbers",
        "Spanish lemmas",
        "Spanish links with redundant alt parameters",
        "Spanish multiword terms",
        "Spanish numerals",
        "Spanish numerals with red links in their headword lines",
        "Spanish terms with IPA pronunciation"
      ],
      "glosses": [
        "eighty-one"
      ],
      "links": [
        [
          "eighty-one",
          "eighty-one"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/oˌt͡ʃenta i ˈuno/"
    },
    {
      "ipa": "[oˌt͡ʃẽn̪.t̪a i ˈu.no]"
    }
  ],
  "word": "ochenta y uno"
}