"head tax" meaning in English

{
  "forms": [
    {
      "form": "head taxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "head tax (plural head taxes)",
      "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": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Taxation",
          "orig": "en:Taxation",
          "parents": [
            "Government",
            "Law",
            "Money",
            "Politics",
            "Society",
            "Justice",
            "Business",
            "All topics",
            "Economics",
            "Fundamental",
            "Social sciences",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A tax determined as a uniform, fixed amount per individual; a poll tax."
      ],
      "id": "en-head_tax-en-noun-jaFWbuVV",
      "links": [
        [
          "tax",
          "tax"
        ],
        [
          "individual",
          "individual"
        ],
        [
          "poll tax",
          "poll tax"
        ]
      ],
      "synonyms": [
        {
          "word": "capitation"
        },
        {
          "word": "poll tax"
        }
      ],
      "wikipedia": [
        "head tax"
      ]
    }
  ],
  "word": "head tax"
}

{
  "forms": [
    {
      "form": "head taxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "head tax (plural head taxes)",
      "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",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Taxation"
      ],
      "glosses": [
        "A tax determined as a uniform, fixed amount per individual; a poll tax."
      ],
      "links": [
        [
          "tax",
          "tax"
        ],
        [
          "individual",
          "individual"
        ],
        [
          "poll tax",
          "poll tax"
        ]
      ],
      "wikipedia": [
        "head tax"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "capitation"
    },
    {
      "word": "poll tax"
    }
  ],
  "word": "head tax"
}