"петнаест" meaning in Serbo-Croatian

{
  "forms": [
    {
      "form": "пѐтнае̄ст",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pètnaēst",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "пѐтнае̄ст"
      },
      "expansion": "пѐтнае̄ст (Latin spelling pètnaēst)",
      "name": "sh-numeral"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Serbo-Croatian cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Serbo-Croatian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "fifteen"
      ],
      "id": "en-петнаест-sh-num-xGOWflcI",
      "links": [
        [
          "fifteen",
          "fifteen"
        ]
      ]
    }
  ],
  "word": "петнаест"
}

{
  "forms": [
    {
      "form": "пѐтнае̄ст",
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "pètnaēst",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "пѐтнае̄ст"
      },
      "expansion": "пѐтнае̄ст (Latin spelling pètnaēst)",
      "name": "sh-numeral"
    }
  ],
  "lang": "Serbo-Croatian",
  "lang_code": "sh",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Serbo-Croatian cardinal numbers",
        "Serbo-Croatian entries with incorrect language header",
        "Serbo-Croatian lemmas",
        "Serbo-Croatian numerals"
      ],
      "glosses": [
        "fifteen"
      ],
      "links": [
        [
          "fifteen",
          "fifteen"
        ]
      ]
    }
  ],
  "word": "петнаест"
}