"гм" meaning in Russian

{
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "гектоме́тр",
        "3": "",
        "4": "hectometer"
      },
      "expansion": "Abbreviation of гектоме́тр (gektométr, “hectometer”)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of гектоме́тр (gektométr, “hectometer”).",
  "forms": [
    {
      "form": "gm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "гм • (gm) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "24 76",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "15 85",
          "kind": "other",
          "name": "Russian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "topical",
          "langcode": "ru",
          "name": "Units of measure",
          "orig": "ru:Units of measure",
          "parents": [
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "hectometer"
      ],
      "id": "en-гм-ru-noun-rODQpKwY",
      "links": [
        [
          "hectometer",
          "hectometer"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɡʲɪktɐˈmʲetr]"
    }
  ],
  "word": "гм"
}

{
  "etymology_number": 2,
  "etymology_text": "Echoic.",
  "forms": [
    {
      "form": "gm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection"
      },
      "expansion": "гм • (gm)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "xm",
          "word": "хм"
        }
      ],
      "categories": [],
      "examples": [
        {
          "english": "H'm! This idea comes from some book which has been translated from German. I can't remember the title.",
          "ref": "1835, Николай Гоголь, “Ноября 13.”, in Записки сумасшедшего; English translation from Claud Field, transl., Memoirs of a Madman, 1916:",
          "roman": "Gm! myslʹ počerpnuta iz odnovo sočinenija, perevedjónnovo s nemeckovo. Nazvanija ne pripomnju.",
          "text": "Гм! мысль почерпнута из одного сочинения, переведённого с немецкого. Названия не припомню.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of хм (xm)"
      ],
      "id": "en-гм-ru-intj-df7GxqHg",
      "links": [
        [
          "хм",
          "хм#Russian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[m̥m̩]"
    }
  ],
  "word": "гм"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian 3-syllable words",
    "Russian abbreviations",
    "Russian entries with incorrect language header",
    "Russian inanimate nouns",
    "Russian indeclinable nouns",
    "Russian interjections",
    "Russian lemmas",
    "Russian masculine nouns",
    "Russian nouns",
    "Russian terms with IPA pronunciation",
    "Russian terms with redundant head parameter",
    "ru:Units of measure"
  ],
  "etymology_number": 1,
  "etymology_templates": [
    {
      "args": {
        "1": "ru",
        "2": "гектоме́тр",
        "3": "",
        "4": "hectometer"
      },
      "expansion": "Abbreviation of гектоме́тр (gektométr, “hectometer”)",
      "name": "abbrev"
    }
  ],
  "etymology_text": "Abbreviation of гектоме́тр (gektométr, “hectometer”).",
  "forms": [
    {
      "form": "gm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "",
        "2": "m-in",
        "3": "-"
      },
      "expansion": "гм • (gm) m inan (indeclinable)",
      "name": "ru-noun"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "hectometer"
      ],
      "links": [
        [
          "hectometer",
          "hectometer"
        ]
      ],
      "tags": [
        "indeclinable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ɡʲɪktɐˈmʲetr]"
    }
  ],
  "word": "гм"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Russian entries with incorrect language header",
    "Russian interjections",
    "Russian lemmas",
    "ru:Units of measure"
  ],
  "etymology_number": 2,
  "etymology_text": "Echoic.",
  "forms": [
    {
      "form": "gm",
      "tags": [
        "romanization"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "ru",
        "2": "interjection"
      },
      "expansion": "гм • (gm)",
      "name": "head"
    }
  ],
  "lang": "Russian",
  "lang_code": "ru",
  "pos": "intj",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "xm",
          "word": "хм"
        }
      ],
      "categories": [
        "Russian terms with quotations"
      ],
      "examples": [
        {
          "english": "H'm! This idea comes from some book which has been translated from German. I can't remember the title.",
          "ref": "1835, Николай Гоголь, “Ноября 13.”, in Записки сумасшедшего; English translation from Claud Field, transl., Memoirs of a Madman, 1916:",
          "roman": "Gm! myslʹ počerpnuta iz odnovo sočinenija, perevedjónnovo s nemeckovo. Nazvanija ne pripomnju.",
          "text": "Гм! мысль почерпнута из одного сочинения, переведённого с немецкого. Названия не припомню.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of хм (xm)"
      ],
      "links": [
        [
          "хм",
          "хм#Russian"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[m̥m̩]"
    }
  ],
  "word": "гм"
}