"private dick" meaning in English

{
  "forms": [
    {
      "form": "private dicks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "private dick (plural private dicks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "People",
          "orig": "en:People",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              1,
              13
            ]
          ],
          "ref": "1939, Raymond Chandler, The Big Sleep, Penguin, published 2011, page 130:",
          "text": "‘Private dick, eh?’ he said, not looking at me at all, but looking out of his window.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A private investigator; a private detective."
      ],
      "id": "en-private_dick-en-noun-Dn8ALrZp",
      "links": [
        [
          "private investigator",
          "private investigator"
        ],
        [
          "private detective",
          "private detective"
        ]
      ],
      "raw_glosses": [
        "(colloquial) A private investigator; a private detective."
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "word": "private dick"
}

{
  "forms": [
    {
      "form": "private dicks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "private dick (plural private dicks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English colloquialisms",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:People"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              1,
              13
            ]
          ],
          "ref": "1939, Raymond Chandler, The Big Sleep, Penguin, published 2011, page 130:",
          "text": "‘Private dick, eh?’ he said, not looking at me at all, but looking out of his window.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A private investigator; a private detective."
      ],
      "links": [
        [
          "private investigator",
          "private investigator"
        ],
        [
          "private detective",
          "private detective"
        ]
      ],
      "raw_glosses": [
        "(colloquial) A private investigator; a private detective."
      ],
      "tags": [
        "colloquial"
      ]
    }
  ],
  "word": "private dick"
}