"bound to" meaning in English

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      "expansion": "bound to",
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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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      "examples": [
        {
          "text": "The leaking fuel tank was bound to explode sooner or later."
        }
      ],
      "glosses": [
        "Indicates something which cannot be avoided."
      ],
      "id": "en-bound_to-en-phrase-USeK90Ew",
      "raw_glosses": [
        "(only with a bare infinitive) Indicates something which cannot be avoided."
      ],
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        "with a bare infinitive"
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  "word": "bound to"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "phrase",
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      "examples": [
        {
          "text": "The leaking fuel tank was bound to explode sooner or later."
        }
      ],
      "glosses": [
        "Indicates something which cannot be avoided."
      ],
      "raw_glosses": [
        "(only with a bare infinitive) Indicates something which cannot be avoided."
      ],
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        "with a bare infinitive"
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  "word": "bound to"
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{
  "called_from": "form_descriptions/1698",
  "msg": "unrecognized head form: See usage note in must.",
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    "bound to"
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  "section": "English",
  "subsection": "phrase",
  "title": "bound to",
  "trace": ""
}