"book token" meaning in English

{
  "forms": [
    {
      "form": "book tokens",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "book token (plural book tokens)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Australian English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "New Zealand English",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2013, Roisin Meaney, Don't Even Think About It",
          "text": "I got a Dunnes jumper and a twenty euro book token from Dad, and luckily he left the tag on the jumper, so I can bring it back after school tomorrow and swap it for something that doesn't look like it was bought by someone who has NO IDEA what thirteen-year-old girls are wearing these days.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A voucher that can be redeemed in the purchase of a book."
      ],
      "id": "en-book_token-en-noun-5m4ApPBa",
      "links": [
        [
          "voucher",
          "voucher"
        ],
        [
          "redeem",
          "redeem"
        ],
        [
          "purchase",
          "purchase"
        ],
        [
          "book",
          "book"
        ]
      ],
      "raw_glosses": [
        "(UK, Australia, New Zealand) A voucher that can be redeemed in the purchase of a book."
      ],
      "synonyms": [
        {
          "word": "booktoken"
        },
        {
          "word": "book-token"
        }
      ],
      "tags": [
        "Australia",
        "New-Zealand",
        "UK"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "EN-AU ck1 book token.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d7/EN-AU_ck1_book_token.ogg/EN-AU_ck1_book_token.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d7/EN-AU_ck1_book_token.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "book token"
}

{
  "forms": [
    {
      "form": "book tokens",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "book token (plural book tokens)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Australian English",
        "British English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with audio links",
        "English terms with quotations",
        "New Zealand English"
      ],
      "examples": [
        {
          "ref": "2013, Roisin Meaney, Don't Even Think About It",
          "text": "I got a Dunnes jumper and a twenty euro book token from Dad, and luckily he left the tag on the jumper, so I can bring it back after school tomorrow and swap it for something that doesn't look like it was bought by someone who has NO IDEA what thirteen-year-old girls are wearing these days.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A voucher that can be redeemed in the purchase of a book."
      ],
      "links": [
        [
          "voucher",
          "voucher"
        ],
        [
          "redeem",
          "redeem"
        ],
        [
          "purchase",
          "purchase"
        ],
        [
          "book",
          "book"
        ]
      ],
      "raw_glosses": [
        "(UK, Australia, New Zealand) A voucher that can be redeemed in the purchase of a book."
      ],
      "tags": [
        "Australia",
        "New-Zealand",
        "UK"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "EN-AU ck1 book token.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/d/d7/EN-AU_ck1_book_token.ogg/EN-AU_ck1_book_token.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d7/EN-AU_ck1_book_token.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "booktoken"
    },
    {
      "word": "book-token"
    }
  ],
  "word": "book token"
}