"longest-distance" meaning in English

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      "expansion": "longest-distance",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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      "examples": [
        {
          "ref": "2021 November 17, William Barter, “Will ten platforms do for HS2 at Euston terminus?”, in RAIL, number 944, page 32",
          "text": "But 25 minutes is not adequate for the longest-distance trains, from Glasgow and Edinburgh, so these 'step down' at Euston and are given 25 minutes plus a service interval - a total of 55 minutes.",
          "type": "quotation"
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      ],
      "form_of": [
        {
          "extra": "most long-distance",
          "word": "long-distance"
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        "superlative form of long-distance: most long-distance"
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      "id": "en-longest-distance-en-adj-pcSS6u~z",
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      "tags": [
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  "word": "longest-distance"
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  "head_templates": [
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      "expansion": "longest-distance",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        {
          "ref": "2021 November 17, William Barter, “Will ten platforms do for HS2 at Euston terminus?”, in RAIL, number 944, page 32",
          "text": "But 25 minutes is not adequate for the longest-distance trains, from Glasgow and Edinburgh, so these 'step down' at Euston and are given 25 minutes plus a service interval - a total of 55 minutes.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most long-distance",
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  "word": "longest-distance"
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