"multinumero" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "multi",
        "3": "numero"
      },
      "expansion": "multi- + numero",
      "name": "prefix"
    }
  ],
  "etymology_text": "From multi- + numero.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "multinumero m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Italian terms prefixed with multi-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "party line (line shared by telephones that have different numbers)"
      ],
      "id": "en-multinumero-it-noun-xXS3BaHk",
      "links": [
        [
          "party line",
          "party line"
        ]
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "multinumero"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "it",
        "2": "multi",
        "3": "numero"
      },
      "expansion": "multi- + numero",
      "name": "prefix"
    }
  ],
  "etymology_text": "From multi- + numero.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "#"
      },
      "expansion": "multinumero m (invariable)",
      "name": "it-noun"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Italian countable nouns",
        "Italian entries with incorrect language header",
        "Italian indeclinable nouns",
        "Italian lemmas",
        "Italian masculine nouns",
        "Italian nouns",
        "Italian terms prefixed with multi-",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "party line (line shared by telephones that have different numbers)"
      ],
      "links": [
        [
          "party line",
          "party line"
        ]
      ],
      "tags": [
        "invariable",
        "masculine"
      ]
    }
  ],
  "word": "multinumero"
}