"master gunnery sergeant" meaning in English

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      "expansion": "master gunnery sergeant (plural master gunnery sergeants)",
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  "lang_code": "en",
  "pos": "noun",
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          "name": "Military",
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            "Fundamental"
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          "name": "People",
          "orig": "en:People",
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      "glosses": [
        "A non-commissioned officer of rank E-9 in the United States Marine Corps, ranking above a master sergeant/first sergeant and below a warrant officer. It is equal in grade to sergeant major"
      ],
      "id": "en-master_gunnery_sergeant-en-noun-KX1TefJ9",
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          "military",
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          "non-commissioned officer",
          "non-commissioned officer"
        ],
        [
          "master sergeant",
          "master sergeant"
        ],
        [
          "first sergeant",
          "first sergeant"
        ],
        [
          "warrant officer",
          "warrant officer"
        ],
        [
          "sergeant major",
          "sergeant major"
        ]
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        "(military, US) A non-commissioned officer of rank E-9 in the United States Marine Corps, ranking above a master sergeant/first sergeant and below a warrant officer. It is equal in grade to sergeant major"
      ],
      "tags": [
        "US"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ],
      "wikipedia": [
        "Master Gunnery Sergeant"
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    }
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  "word": "master gunnery sergeant"
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  "lang_code": "en",
  "pos": "noun",
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        "en:Military",
        "en:Military ranks",
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        "A non-commissioned officer of rank E-9 in the United States Marine Corps, ranking above a master sergeant/first sergeant and below a warrant officer. It is equal in grade to sergeant major"
      ],
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          "non-commissioned officer",
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        [
          "master sergeant",
          "master sergeant"
        ],
        [
          "first sergeant",
          "first sergeant"
        ],
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          "warrant officer",
          "warrant officer"
        ],
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          "sergeant major",
          "sergeant major"
        ]
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        "(military, US) A non-commissioned officer of rank E-9 in the United States Marine Corps, ranking above a master sergeant/first sergeant and below a warrant officer. It is equal in grade to sergeant major"
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  "word": "master gunnery sergeant"
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