"goldback" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "gold",
        "3": "back"
      },
      "expansion": "gold + back",
      "name": "compound"
    }
  ],
  "etymology_text": "From gold + back.",
  "forms": [
    {
      "form": "goldbacks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "goldback (plural goldbacks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0 0",
      "word": "greenback"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "54 20 26",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "48 19 33",
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          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "48 19 32",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A kind of gold certificate with an orange back."
      ],
      "id": "en-goldback-en-noun-m3Rn1vRn",
      "links": [
        [
          "gold certificate",
          "gold certificate"
        ]
      ],
      "raw_glosses": [
        "(US, slang, historical) A kind of gold certificate with an orange back."
      ],
      "synonyms": [
        {
          "word": "yellow boy"
        }
      ],
      "tags": [
        "US",
        "historical",
        "slang"
      ]
    },
    {
      "categories": [],
      "glosses": [
        "Any member of species Pentagramma triangularis of ferns."
      ],
      "id": "en-goldback-en-noun-lHzHHyVH"
    },
    {
      "categories": [
        {
          "_dis": "23 32 45",
          "kind": "other",
          "langcode": "en",
          "name": "Ferns",
          "orig": "en:Ferns",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 3 68",
          "kind": "other",
          "langcode": "en",
          "name": "Money",
          "orig": "en:Money",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Any member of genus Pityrogramma of ferns."
      ],
      "id": "en-goldback-en-noun-ba1GZmd0",
      "links": [
        [
          "Pityrogramma",
          "Pityrogramma#Translingual"
        ]
      ]
    }
  ],
  "word": "goldback"
}

{
  "categories": [
    "English compound terms",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Ferns",
    "en:Money"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "gold",
        "3": "back"
      },
      "expansion": "gold + back",
      "name": "compound"
    }
  ],
  "etymology_text": "From gold + back.",
  "forms": [
    {
      "form": "goldbacks",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "goldback (plural goldbacks)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "greenback"
    }
  ],
  "senses": [
    {
      "categories": [
        "American English",
        "English slang",
        "English terms with historical senses"
      ],
      "glosses": [
        "A kind of gold certificate with an orange back."
      ],
      "links": [
        [
          "gold certificate",
          "gold certificate"
        ]
      ],
      "raw_glosses": [
        "(US, slang, historical) A kind of gold certificate with an orange back."
      ],
      "synonyms": [
        {
          "word": "yellow boy"
        }
      ],
      "tags": [
        "US",
        "historical",
        "slang"
      ]
    },
    {
      "categories": [
        "Entries using missing taxonomic name (species)"
      ],
      "glosses": [
        "Any member of species Pentagramma triangularis of ferns."
      ]
    },
    {
      "glosses": [
        "Any member of genus Pityrogramma of ferns."
      ],
      "links": [
        [
          "Pityrogramma",
          "Pityrogramma#Translingual"
        ]
      ]
    }
  ],
  "word": "goldback"
}