"МЦК" meaning in Russian

{
  "forms": [
    {
      "form": "MCK",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "МЦК • (MCK) n inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "moskóvskoje centrálʹnoje kolʹcó, “Moscow Central Circle”",
          "word": "моско́вское центра́льное кольцо́"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ru",
          "name": "Moscow",
          "orig": "ru:Moscow",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "ru",
          "name": "Rail transportation",
          "orig": "ru:Rail transportation",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "initialism of моско́вское центра́льное кольцо́ (moskóvskoje centrálʹnoje kolʹcó, “Moscow Central Circle”)"
      ],
      "id": "en-МЦК-ru-name-9CFPm3FQ",
      "links": [
        [
          "моско́вское",
          "московский#Russian"
        ],
        [
          "центра́льное",
          "центральный#Russian"
        ],
        [
          "кольцо́",
          "кольцо#Russian"
        ]
      ],
      "related": [
        {
          "english": "subway",
          "roman": "metropolitén",
          "word": "метрополите́н"
        },
        {
          "english": "subway",
          "roman": "metró",
          "word": "метро́"
        },
        {
          "english": "Moscow Central Diameters",
          "roman": "MCD",
          "word": "МЦД"
        },
        {
          "english": "Big Circle Line",
          "roman": "BKL",
          "word": "БКЛ"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɛm t͡sɛ ˈka]"
    }
  ],
  "word": "МЦК"
}

{
  "forms": [
    {
      "form": "MCK",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "n-in",
        "3": "-"
      },
      "expansion": "МЦК • (MCK) n inan (indeclinable)",
      "name": "ru-proper noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "name",
  "related": [
    {
      "english": "subway",
      "roman": "metropolitén",
      "word": "метрополите́н"
    },
    {
      "english": "subway",
      "roman": "metró",
      "word": "метро́"
    },
    {
      "english": "Moscow Central Diameters",
      "roman": "MCD",
      "word": "МЦД"
    },
    {
      "english": "Big Circle Line",
      "roman": "BKL",
      "word": "БКЛ"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "extra": "moskóvskoje centrálʹnoje kolʹcó, “Moscow Central Circle”",
          "word": "моско́вское центра́льное кольцо́"
        }
      ],
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian initialisms",
        "Russian lemmas",
        "Russian neuter nouns",
        "Russian proper nouns",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter",
        "ru:Moscow",
        "ru:Rail transportation"
      ],
      "glosses": [
        "initialism of моско́вское центра́льное кольцо́ (moskóvskoje centrálʹnoje kolʹcó, “Moscow Central Circle”)"
      ],
      "links": [
        [
          "моско́вское",
          "московский#Russian"
        ],
        [
          "центра́льное",
          "центральный#Russian"
        ],
        [
          "кольцо́",
          "кольцо#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɛm t͡sɛ ˈka]"
    }
  ],
  "word": "МЦК"
}