"greenest" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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      "examples": [
        {
          "ref": "2020 November 18, “Network News: Network Rail sets science-based global warming targets”, in Rail, page 22",
          "text": "Chief executive Andrew Haines said: \"Rail is already the cleanest and greenest mode of transporting large numbers of people and goods, but we're committed to cutting our carbon footprint even further. [...].\"",
          "type": "quotation"
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      "form_of": [
        {
          "extra": "most green",
          "word": "green"
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      "glosses": [
        "superlative form of green: most green"
      ],
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      "tags": [
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  "word": "greenest"
}

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      "expansion": "greenest",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        {
          "ref": "2020 November 18, “Network News: Network Rail sets science-based global warming targets”, in Rail, page 22",
          "text": "Chief executive Andrew Haines said: \"Rail is already the cleanest and greenest mode of transporting large numbers of people and goods, but we're committed to cutting our carbon footprint even further. [...].\"",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "extra": "most green",
          "word": "green"
        }
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      "glosses": [
        "superlative form of green: most green"
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  "word": "greenest"
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