"МСК" meaning in Russian

{
  "forms": [
    {
      "form": "MSK",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "МСК • (MSK) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Moskvá",
          "word": "Москва́"
        }
      ],
      "categories": [],
      "glosses": [
        "Initialism of Москва́ (Moskvá)"
      ],
      "id": "en-МСК-ru-noun-Vf04HWI6",
      "links": [
        [
          "Москва́",
          "Москва#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "(Moskóvskoje vrémja, “Moscow Time, Moscow Standard Time”) (the time zone in western Russia)",
          "word": "Моско́вское вре́мя"
        }
      ],
      "categories": [
        {
          "_dis": "2 98",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "2 98",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "1 99",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "10 90",
          "kind": "place",
          "langcode": "ru",
          "name": "Moscow",
          "orig": "ru:Moscow",
          "parents": [
            "Russia",
            "Asia",
            "Europe",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "2 98",
          "kind": "place",
          "langcode": "ru",
          "name": "Russia",
          "orig": "ru:Russia",
          "parents": [
            "Asia",
            "Europe",
            "Earth",
            "Eurasia",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "0 100",
          "kind": "topical",
          "langcode": "ru",
          "name": "Time",
          "orig": "ru:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "english": "Moscow Standard Time+9 (nine hours after Moscow Time, the time zone in Kamchatka, eastern Russia)",
          "roman": "MSK+9",
          "text": "МСК+9",
          "type": "example"
        }
      ],
      "glosses": [
        "Initialism of Моско́вское вре́мя (Moskóvskoje vrémja, “Moscow Time, Moscow Standard Time”) (the time zone in western Russia)"
      ],
      "id": "en-МСК-ru-noun-R7gVZ~kX",
      "links": [
        [
          "Моско́вское вре́мя",
          "Московское время#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "wikipedia": [
    "Irkutsk Time",
    "Kaliningrad Time",
    "Time in Russia",
    "ru:Московское время"
  ],
  "word": "МСК"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian entries with incorrect language header",
    "Russian inanimate nouns",
    "Russian indeclinable nouns",
    "Russian lemmas",
    "Russian masculine nouns",
    "Russian nouns",
    "Russian terms with redundant head parameter",
    "ru:Moscow",
    "ru:Russia",
    "ru:Time"
  ],
  "forms": [
    {
      "form": "MSK",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "МСК • (MSK) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "Moskvá",
          "word": "Москва́"
        }
      ],
      "categories": [
        "Russian initialisms"
      ],
      "glosses": [
        "Initialism of Москва́ (Moskvá)"
      ],
      "links": [
        [
          "Москва́",
          "Москва#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    },
    {
      "alt_of": [
        {
          "extra": "(Moskóvskoje vrémja, “Moscow Time, Moscow Standard Time”) (the time zone in western Russia)",
          "word": "Моско́вское вре́мя"
        }
      ],
      "categories": [
        "Russian initialisms",
        "Russian terms with quotations"
      ],
      "examples": [
        {
          "english": "Moscow Standard Time+9 (nine hours after Moscow Time, the time zone in Kamchatka, eastern Russia)",
          "roman": "MSK+9",
          "text": "МСК+9",
          "type": "example"
        }
      ],
      "glosses": [
        "Initialism of Моско́вское вре́мя (Moskóvskoje vrémja, “Moscow Time, Moscow Standard Time”) (the time zone in western Russia)"
      ],
      "links": [
        [
          "Моско́вское вре́мя",
          "Московское время#Russian"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "indeclinable",
        "initialism"
      ]
    }
  ],
  "wikipedia": [
    "Irkutsk Time",
    "Kaliningrad Time",
    "Time in Russia",
    "ru:Московское время"
  ],
  "word": "МСК"
}