"paper son" meaning in English

{
  "forms": [
    {
      "form": "paper sons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "paper son (plural paper sons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Human migration",
          "orig": "en:Human migration",
          "parents": [
            "Human behaviour",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Male people",
          "orig": "en:Male people",
          "parents": [
            "Male",
            "People",
            "Gender",
            "Human",
            "Biology",
            "Psychology",
            "Sociology",
            "All topics",
            "Sciences",
            "Social sciences",
            "Fundamental",
            "Society"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A Chinese male who was falsely registered as the son of another Chinese who had already migrated to America, in order to take advantage of immigration laws."
      ],
      "id": "en-paper_son-en-noun-RafugYRi",
      "links": [
        [
          "male",
          "male"
        ]
      ],
      "raw_glosses": [
        "(US, historical) A Chinese male who was falsely registered as the son of another Chinese who had already migrated to America, in order to take advantage of immigration laws."
      ],
      "tags": [
        "US",
        "historical"
      ],
      "wikipedia": [
        "en:paper son"
      ]
    }
  ],
  "word": "paper son"
}

{
  "forms": [
    {
      "form": "paper sons",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "paper son (plural paper sons)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with historical senses",
        "en:Human migration",
        "en:Male people"
      ],
      "glosses": [
        "A Chinese male who was falsely registered as the son of another Chinese who had already migrated to America, in order to take advantage of immigration laws."
      ],
      "links": [
        [
          "male",
          "male"
        ]
      ],
      "raw_glosses": [
        "(US, historical) A Chinese male who was falsely registered as the son of another Chinese who had already migrated to America, in order to take advantage of immigration laws."
      ],
      "tags": [
        "US",
        "historical"
      ],
      "wikipedia": [
        "en:paper son"
      ]
    }
  ],
  "word": "paper son"
}