"мн. ч." meaning in Russian

{
  "forms": [
    {
      "form": "mn. č.",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "мн. ч. • (mn. č.) n inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "mnóžestvennoje čisló, “plural number”",
          "word": "мно́жественное число́"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ru",
          "name": "Grammar",
          "orig": "ru:Grammar",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "abbreviation of мно́жественное число́ (mnóžestvennoje čisló, “plural number”)"
      ],
      "id": "en-мн._ч.-ru-noun-OyqpfinZ",
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "мно́жественное число́",
          "множественное число#Russian"
        ],
        [
          "plural",
          "plural"
        ],
        [
          "number",
          "number"
        ]
      ],
      "raw_glosses": [
        "(grammar) abbreviation of мно́жественное число́ (mnóžestvennoje čisló, “plural number”)"
      ],
      "related": [
        {
          "roman": "jed. č.",
          "word": "ед. ч."
        }
      ],
      "synonyms": [
        {
          "roman": "mn.č.",
          "word": "мн.ч."
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable"
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "word": "мн. ч."
}

{
  "forms": [
    {
      "form": "mn. č.",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "мн. ч. • (mn. č.) n inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "related": [
    {
      "roman": "jed. č.",
      "word": "ед. ч."
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "extra": "mnóžestvennoje čisló, “plural number”",
          "word": "мно́жественное число́"
        }
      ],
      "categories": [
        "Pages with 2 entries",
        "Pages with entries",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian lemmas",
        "Russian multiword terms",
        "Russian neuter nouns",
        "Russian nouns",
        "Russian terms spelled with .",
        "ru:Grammar"
      ],
      "glosses": [
        "abbreviation of мно́жественное число́ (mnóžestvennoje čisló, “plural number”)"
      ],
      "links": [
        [
          "grammar",
          "grammar"
        ],
        [
          "мно́жественное число́",
          "множественное число#Russian"
        ],
        [
          "plural",
          "plural"
        ],
        [
          "number",
          "number"
        ]
      ],
      "raw_glosses": [
        "(grammar) abbreviation of мно́жественное число́ (mnóžestvennoje čisló, “plural number”)"
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable"
      ],
      "topics": [
        "grammar",
        "human-sciences",
        "linguistics",
        "sciences"
      ]
    }
  ],
  "synonyms": [
    {
      "roman": "mn.č.",
      "word": "мн.ч."
    }
  ],
  "word": "мн. ч."
}