"barrack-room lawyer" meaning in English

{
  "forms": [
    {
      "form": "barrack-room lawyers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "barrack-room lawyer (plural barrack-room lawyers)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2012 May 4, Shelley Birse, “Blood and Circuses” (34:38 from the start), in Miss Fisher's Murder Mysteries, season 1, episode 11",
          "text": "\"Dot\" Williams: If you were any kind of senior officer, you wouldn't have sent such an inexperienced young policeman out on such a dangerous job.\nSenior Sergeant Grossmith: Hooked yourself a regular barracks room lawyer, I see.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A know-it-all."
      ],
      "id": "en-barrack-room_lawyer-en-noun-nJ1Z~tPK",
      "links": [
        [
          "military",
          "military"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "know-it-all",
          "know-it-all"
        ]
      ],
      "raw_glosses": [
        "(military slang) A know-it-all."
      ],
      "synonyms": [
        {
          "word": "barracks lawyer"
        },
        {
          "word": "barracks room lawyer"
        }
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "word": "barrack-room lawyer"
}

{
  "forms": [
    {
      "form": "barrack-room lawyers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "barrack-room lawyer (plural barrack-room lawyers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English military slang",
        "English multiword terms",
        "English nouns",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "2012 May 4, Shelley Birse, “Blood and Circuses” (34:38 from the start), in Miss Fisher's Murder Mysteries, season 1, episode 11",
          "text": "\"Dot\" Williams: If you were any kind of senior officer, you wouldn't have sent such an inexperienced young policeman out on such a dangerous job.\nSenior Sergeant Grossmith: Hooked yourself a regular barracks room lawyer, I see.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A know-it-all."
      ],
      "links": [
        [
          "military",
          "military"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "know-it-all",
          "know-it-all"
        ]
      ],
      "raw_glosses": [
        "(military slang) A know-it-all."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "government",
        "military",
        "politics",
        "war"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "barracks lawyer"
    },
    {
      "word": "barracks room lawyer"
    }
  ],
  "word": "barrack-room lawyer"
}