"prostitute's pupil" meaning in English

{
  "etymology_text": "From the notional similarity in behaviour: both (the pupil and prostitute) accommodate but do not react. In the case of the pupil, it is reacting to light; and in the case of the latter, it is to the client.",
  "forms": [
    {
      "form": "prostitute's pupils",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prostitute's pupil (plural prostitute's pupils)",
      "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"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [
            "Biology",
            "Healthcare",
            "Sciences",
            "Health",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Argyll Robertson pupil, a characteristic sign in syphilitic eye disease."
      ],
      "id": "en-prostitute's_pupil-en-noun-IV58HrVW",
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "Argyll Robertson pupil",
          "Argyll Robertson pupil"
        ],
        [
          "characteristic",
          "characteristic"
        ],
        [
          "sign",
          "sign"
        ],
        [
          "syphilitic",
          "syphilitic"
        ],
        [
          "eye",
          "eye"
        ],
        [
          "disease",
          "disease"
        ]
      ],
      "raw_glosses": [
        "(medicine, slang) Argyll Robertson pupil, a characteristic sign in syphilitic eye disease."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "prostitute's pupil"
}

{
  "etymology_text": "From the notional similarity in behaviour: both (the pupil and prostitute) accommodate but do not react. In the case of the pupil, it is reacting to light; and in the case of the latter, it is to the client.",
  "forms": [
    {
      "form": "prostitute's pupils",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prostitute's pupil (plural prostitute's pupils)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English slang",
        "Pages with 1 entry",
        "en:Medicine"
      ],
      "glosses": [
        "Argyll Robertson pupil, a characteristic sign in syphilitic eye disease."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ],
        [
          "Argyll Robertson pupil",
          "Argyll Robertson pupil"
        ],
        [
          "characteristic",
          "characteristic"
        ],
        [
          "sign",
          "sign"
        ],
        [
          "syphilitic",
          "syphilitic"
        ],
        [
          "eye",
          "eye"
        ],
        [
          "disease",
          "disease"
        ]
      ],
      "raw_glosses": [
        "(medicine, slang) Argyll Robertson pupil, a characteristic sign in syphilitic eye disease."
      ],
      "tags": [
        "slang"
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "prostitute's pupil"
}