"graduate tax" meaning in English

{
  "forms": [
    {
      "form": "graduate taxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "graduate tax (plural graduate taxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Irish English",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A proposed method of financing higher education, whereby graduates would pay their tuition costs as additional income tax."
      ],
      "id": "en-graduate_tax-en-noun-VKPtZAfB",
      "links": [
        [
          "financing",
          "finance"
        ],
        [
          "higher education",
          "higher education"
        ],
        [
          "graduate",
          "graduate"
        ],
        [
          "tuition",
          "tuition"
        ],
        [
          "income tax",
          "income tax"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland) A proposed method of financing higher education, whereby graduates would pay their tuition costs as additional income tax."
      ],
      "tags": [
        "Ireland",
        "UK"
      ],
      "wikipedia": [
        "graduate tax"
      ]
    }
  ],
  "word": "graduate tax"
}

{
  "forms": [
    {
      "form": "graduate taxes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "graduate tax (plural graduate taxes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English countable nouns",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Irish English"
      ],
      "glosses": [
        "A proposed method of financing higher education, whereby graduates would pay their tuition costs as additional income tax."
      ],
      "links": [
        [
          "financing",
          "finance"
        ],
        [
          "higher education",
          "higher education"
        ],
        [
          "graduate",
          "graduate"
        ],
        [
          "tuition",
          "tuition"
        ],
        [
          "income tax",
          "income tax"
        ]
      ],
      "raw_glosses": [
        "(UK, Ireland) A proposed method of financing higher education, whereby graduates would pay their tuition costs as additional income tax."
      ],
      "tags": [
        "Ireland",
        "UK"
      ],
      "wikipedia": [
        "graduate tax"
      ]
    }
  ],
  "word": "graduate tax"
}