"murder board" meaning in English

{
  "etymology_text": "Of US military origin.\nMurder refers to a group of crows. Petty Officers in the US Navy have a bird on their rank insignia commonly referred to as a \"crow\", and the petty officers themselves are sometimes referred to as crows. A murder board refers to when a junior sailor would go through a rigorous questioning session by a group of more experienced petty officers (crows, or a murder) in order to prepare them for a further oral examination conducted by higher ranked military personnel in order to attain professional qualification or some other purpose.",
  "forms": [
    {
      "form": "murder boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "murder board (plural murder boards)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A committee of questioners set up to review a proposal and/or to help someone prepare for a difficult oral examination."
      ],
      "id": "en-murder_board-en-noun-WhZXjTbJ",
      "links": [
        [
          "committee",
          "committee"
        ],
        [
          "questioner",
          "questioner"
        ],
        [
          "review",
          "review"
        ],
        [
          "proposal",
          "proposal"
        ],
        [
          "prepare",
          "prepare"
        ],
        [
          "oral",
          "oral"
        ],
        [
          "examination",
          "examination"
        ]
      ],
      "raw_glosses": [
        "(informal) A committee of questioners set up to review a proposal and/or to help someone prepare for a difficult oral examination."
      ],
      "tags": [
        "informal"
      ],
      "wikipedia": [
        "murder board"
      ]
    }
  ],
  "word": "murder board"
}

{
  "etymology_text": "Of US military origin.\nMurder refers to a group of crows. Petty Officers in the US Navy have a bird on their rank insignia commonly referred to as a \"crow\", and the petty officers themselves are sometimes referred to as crows. A murder board refers to when a junior sailor would go through a rigorous questioning session by a group of more experienced petty officers (crows, or a murder) in order to prepare them for a further oral examination conducted by higher ranked military personnel in order to attain professional qualification or some other purpose.",
  "forms": [
    {
      "form": "murder boards",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "murder board (plural murder boards)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns"
      ],
      "glosses": [
        "A committee of questioners set up to review a proposal and/or to help someone prepare for a difficult oral examination."
      ],
      "links": [
        [
          "committee",
          "committee"
        ],
        [
          "questioner",
          "questioner"
        ],
        [
          "review",
          "review"
        ],
        [
          "proposal",
          "proposal"
        ],
        [
          "prepare",
          "prepare"
        ],
        [
          "oral",
          "oral"
        ],
        [
          "examination",
          "examination"
        ]
      ],
      "raw_glosses": [
        "(informal) A committee of questioners set up to review a proposal and/or to help someone prepare for a difficult oral examination."
      ],
      "tags": [
        "informal"
      ],
      "wikipedia": [
        "murder board"
      ]
    }
  ],
  "word": "murder board"
}