"flatty-ken" meaning in English

{
  "forms": [
    {
      "form": "flatty-kens",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flatty-ken (plural flatty-kens)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English Thieves' Cant",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A public house whose landlord is ignorant of the practices of the thieves and tramps who frequent it."
      ],
      "id": "en-flatty-ken-en-noun-4dUf4Cmy",
      "links": [
        [
          "public house",
          "public house"
        ],
        [
          "landlord",
          "landlord"
        ],
        [
          "ignorant",
          "ignorant"
        ],
        [
          "thieves",
          "thief"
        ],
        [
          "tramp",
          "tramp"
        ],
        [
          "frequent",
          "frequent"
        ]
      ],
      "qualifier": "thieves' cant",
      "raw_glosses": [
        "(UK, thieves' cant, obsolete) A public house whose landlord is ignorant of the practices of the thieves and tramps who frequent it."
      ],
      "tags": [
        "UK",
        "obsolete"
      ]
    }
  ],
  "word": "flatty-ken"
}

{
  "forms": [
    {
      "form": "flatty-kens",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "flatty-ken (plural flatty-kens)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English Thieves' Cant",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with obsolete senses"
      ],
      "glosses": [
        "A public house whose landlord is ignorant of the practices of the thieves and tramps who frequent it."
      ],
      "links": [
        [
          "public house",
          "public house"
        ],
        [
          "landlord",
          "landlord"
        ],
        [
          "ignorant",
          "ignorant"
        ],
        [
          "thieves",
          "thief"
        ],
        [
          "tramp",
          "tramp"
        ],
        [
          "frequent",
          "frequent"
        ]
      ],
      "qualifier": "thieves' cant",
      "raw_glosses": [
        "(UK, thieves' cant, obsolete) A public house whose landlord is ignorant of the practices of the thieves and tramps who frequent it."
      ],
      "tags": [
        "UK",
        "obsolete"
      ]
    }
  ],
  "word": "flatty-ken"
}