"км" meaning in Russian

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "киломе́тр"
      },
      "expansion": "Abbreviation of киломе́тр (kilométr)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of киломе́тр (kilométr).",
  "forms": [
    {
      "form": "km",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "км • (km) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "km, kilometer"
      ],
      "id": "en-км-ru-noun-TP4JruZQ",
      "links": [
        [
          "km",
          "km"
        ],
        [
          "kilometer",
          "kilometer"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kʲɪɫɐˈmʲetr]"
    }
  ],
  "word": "км"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "киломе́тр"
      },
      "expansion": "Abbreviation of киломе́тр (kilométr)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of киломе́тр (kilométr).",
  "forms": [
    {
      "form": "km",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "км • (km) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Russian 3-syllable words",
        "Russian abbreviations",
        "Russian entries with incorrect language header",
        "Russian inanimate nouns",
        "Russian indeclinable nouns",
        "Russian lemmas",
        "Russian masculine nouns",
        "Russian nouns",
        "Russian terms with IPA pronunciation",
        "Russian terms with redundant head parameter"
      ],
      "glosses": [
        "km, kilometer"
      ],
      "links": [
        [
          "km",
          "km"
        ],
        [
          "kilometer",
          "kilometer"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kʲɪɫɐˈmʲetr]"
    }
  ],
  "word": "км"
}