"knight of the post" meaning in English

{
  "etymology_text": "Suggesting that such a person would be familiar with the whipping-post or pillory.",
  "forms": [
    {
      "form": "knights of the post",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "knights of the post"
      },
      "expansion": "knight of the post (plural knights of the post)",
      "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": "1592, Thomas Nashe, Pierce Penniless",
          "text": "A knight of the post […] quoth he, for so I am termed; a fellow that will swear you anything for twelve pence.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A known perjurer; a professional false witness."
      ],
      "id": "en-knight_of_the_post-en-noun-DXsbiROt",
      "links": [
        [
          "perjurer",
          "perjurer"
        ],
        [
          "false witness",
          "false witness"
        ]
      ],
      "raw_glosses": [
        "(obsolete, idiomatic) A known perjurer; a professional false witness."
      ],
      "tags": [
        "idiomatic",
        "obsolete"
      ],
      "translations": [
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "professionálʹnyj lžesvidételʹ",
          "sense": "professional false witness",
          "tags": [
            "masculine"
          ],
          "word": "профессиона́льный лжесвиде́тель"
        }
      ]
    }
  ],
  "word": "knight of the post"
}

{
  "etymology_text": "Suggesting that such a person would be familiar with the whipping-post or pillory.",
  "forms": [
    {
      "form": "knights of the post",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "knights of the post"
      },
      "expansion": "knight of the post (plural knights of the post)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with obsolete senses",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1592, Thomas Nashe, Pierce Penniless",
          "text": "A knight of the post […] quoth he, for so I am termed; a fellow that will swear you anything for twelve pence.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A known perjurer; a professional false witness."
      ],
      "links": [
        [
          "perjurer",
          "perjurer"
        ],
        [
          "false witness",
          "false witness"
        ]
      ],
      "raw_glosses": [
        "(obsolete, idiomatic) A known perjurer; a professional false witness."
      ],
      "tags": [
        "idiomatic",
        "obsolete"
      ]
    }
  ],
  "translations": [
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "professionálʹnyj lžesvidételʹ",
      "sense": "professional false witness",
      "tags": [
        "masculine"
      ],
      "word": "профессиона́льный лжесвиде́тель"
    }
  ],
  "word": "knight of the post"
}