"pledgs" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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          "ref": "1727, James Anderson, Collections Relating to the History of Mary, Queen of Scotland:",
          "text": "They desired therfore to knowe what assurance we would give for the performance therof parte, and first what pledgs of Noblemen of our Realme would we cause to be entred in England, […]",
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        "plural of pledg"
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  "lang_code": "en",
  "pos": "noun",
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          "ref": "1727, James Anderson, Collections Relating to the History of Mary, Queen of Scotland:",
          "text": "They desired therfore to knowe what assurance we would give for the performance therof parte, and first what pledgs of Noblemen of our Realme would we cause to be entred in England, […]",
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