"икс" meaning in Macedonian

{
  "forms": [
    {
      "form": "iks",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "икс • (iks) m",
      "name": "mk-noun"
    }
  ],
  "lang": "Macedonian",
  "lang_code": "mk",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "58 42",
          "kind": "other",
          "name": "Macedonian entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "68 32",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "68 32",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "84 16",
          "kind": "other",
          "langcode": "mk",
          "name": "Latin letter names",
          "orig": "mk:Latin letter names",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The Roman letter X, x."
      ],
      "id": "en-икс-mk-noun-Oza96d3n",
      "links": [
        [
          "X",
          "X"
        ],
        [
          "x",
          "x"
        ]
      ]
    },
    {
      "glosses": [
        "An unknown quantity or unknown value."
      ],
      "id": "en-икс-mk-noun-9gEEKNsW"
    }
  ],
  "sounds": [
    {
      "ipa": "[iks]"
    }
  ],
  "word": "икс"
}

{
  "categories": [
    "Macedonian 1-syllable words",
    "Macedonian entries with incorrect language header",
    "Macedonian lemmas",
    "Macedonian masculine nouns",
    "Macedonian nouns",
    "Macedonian oxytone terms",
    "Macedonian terms with IPA pronunciation",
    "Pages with 2 entries",
    "Pages with entries",
    "mk:Latin letter names"
  ],
  "forms": [
    {
      "form": "iks",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "икс • (iks) m",
      "name": "mk-noun"
    }
  ],
  "lang": "Macedonian",
  "lang_code": "mk",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "The Roman letter X, x."
      ],
      "links": [
        [
          "X",
          "X"
        ],
        [
          "x",
          "x"
        ]
      ]
    },
    {
      "glosses": [
        "An unknown quantity or unknown value."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[iks]"
    }
  ],
  "word": "икс"
}