"threepenny bit" meaning in English

{
  "forms": [
    {
      "form": "threepenny bits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "threepenny bit (plural threepenny bits)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "71 29",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1981, P. L. Travers, Mary Poppins, revised edition, chapter 1",
          "text": "All day he worked, cutting out pennies and shillings and half-crowns and threepenny-bits."
        }
      ],
      "glosses": [
        "Former (pre-decimalisation) British and Irish coins worth three old pennies."
      ],
      "id": "en-threepenny_bit-en-noun-gOvHny6-",
      "links": [
        [
          "pre-decimalisation",
          "pre-decimalisation"
        ],
        [
          "old pennies",
          "old penny"
        ]
      ],
      "raw_glosses": [
        "(historical) Former (pre-decimalisation) British and Irish coins worth three old pennies."
      ],
      "synonyms": [
        {
          "_dis1": "84 16",
          "word": "threepence"
        },
        {
          "_dis1": "84 16",
          "word": "thruppence"
        },
        {
          "_dis1": "84 16",
          "word": "threepenny-bit"
        }
      ],
      "tags": [
        "historical"
      ]
    },
    {
      "categories": [],
      "examples": [
        {
          "ref": "1983, Robert Drewe, The Bodysurfers, Penguin, published 2009, page 86",
          "text": "All these skinny modern chicks with their perky threepenny bits do nothing for me.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A woman's breast; a tit."
      ],
      "id": "en-threepenny_bit-en-noun-fVUNVlR2",
      "links": [
        [
          "Cockney rhyming slang",
          "Cockney rhyming slang"
        ],
        [
          "breast",
          "breast"
        ],
        [
          "tit",
          "tit"
        ]
      ],
      "raw_glosses": [
        "(Cockney rhyming slang) A woman's breast; a tit."
      ],
      "tags": [
        "Cockney",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈθɹʌpəni bɪt/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "En-uk-threepenny-bit.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/b5/En-uk-threepenny-bit.ogg/En-uk-threepenny-bit.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/b5/En-uk-threepenny-bit.ogg",
      "tags": [
        "UK"
      ],
      "text": "Audio (UK)"
    }
  ],
  "wikipedia": [
    "Threepence (British coin)"
  ],
  "word": "threepenny bit"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English terms with IPA pronunciation",
    "English terms with audio links"
  ],
  "forms": [
    {
      "form": "threepenny bits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "threepenny bit (plural threepenny bits)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English terms with historical senses"
      ],
      "examples": [
        {
          "ref": "1981, P. L. Travers, Mary Poppins, revised edition, chapter 1",
          "text": "All day he worked, cutting out pennies and shillings and half-crowns and threepenny-bits."
        }
      ],
      "glosses": [
        "Former (pre-decimalisation) British and Irish coins worth three old pennies."
      ],
      "links": [
        [
          "pre-decimalisation",
          "pre-decimalisation"
        ],
        [
          "old pennies",
          "old penny"
        ]
      ],
      "raw_glosses": [
        "(historical) Former (pre-decimalisation) British and Irish coins worth three old pennies."
      ],
      "tags": [
        "historical"
      ]
    },
    {
      "categories": [
        "Cockney rhyming slang",
        "English terms with quotations",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1983, Robert Drewe, The Bodysurfers, Penguin, published 2009, page 86",
          "text": "All these skinny modern chicks with their perky threepenny bits do nothing for me.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A woman's breast; a tit."
      ],
      "links": [
        [
          "Cockney rhyming slang",
          "Cockney rhyming slang"
        ],
        [
          "breast",
          "breast"
        ],
        [
          "tit",
          "tit"
        ]
      ],
      "raw_glosses": [
        "(Cockney rhyming slang) A woman's breast; a tit."
      ],
      "tags": [
        "Cockney",
        "slang"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈθɹʌpəni bɪt/",
      "tags": [
        "UK"
      ]
    },
    {
      "audio": "En-uk-threepenny-bit.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/b/b5/En-uk-threepenny-bit.ogg/En-uk-threepenny-bit.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/b/b5/En-uk-threepenny-bit.ogg",
      "tags": [
        "UK"
      ],
      "text": "Audio (UK)"
    }
  ],
  "synonyms": [
    {
      "word": "threepence"
    },
    {
      "word": "thruppence"
    },
    {
      "word": "threepenny-bit"
    }
  ],
  "wikipedia": [
    "Threepence (British coin)"
  ],
  "word": "threepenny bit"
}