"decades young" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "coordinate_terms": [
        {
          "word": "years young"
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      "examples": [
        {
          "ref": "1956, The Santa Fe Magazine, volume 50, page 18",
          "text": "Gaily-garbed Indians and an historical diamond-stacked locomotive, nearly nine decades young, featured a public program there.",
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        {
          "ref": "1977, American chemistry: bicentennial, page 220",
          "text": "The distinguished biochemist William C. Rose, now almost nine decades young, Emeritus Professor of Biochemistry at Illinois, has provided a first-hand account of the functioning of the Illinois 25 Department under Adams.",
          "type": "quotation"
        },
        {
          "ref": "1985, Virginia Review, volume 73, page 29",
          "text": "At some eight decades young (born 1908 according to the Hornbook of Virginia History), he discussed history as he saw and lived it.",
          "type": "quotation"
        },
        {
          "ref": "2001, New York Sportsman, volume 30, issues 1-4, page 81",
          "text": "This is wade fishing of the finest order, and at eight decades young, Bill Meshanic, the sage of the Finger Lakes Chapter of Trout Unlimited, is its biggest fan."
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        "Decades old."
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        "(euphemistic, humorous) Decades old."
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  "word": "decades young"
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          "ref": "1977, American chemistry: bicentennial, page 220",
          "text": "The distinguished biochemist William C. Rose, now almost nine decades young, Emeritus Professor of Biochemistry at Illinois, has provided a first-hand account of the functioning of the Illinois 25 Department under Adams.",
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        },
        {
          "ref": "1985, Virginia Review, volume 73, page 29",
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          "text": "This is wade fishing of the finest order, and at eight decades young, Bill Meshanic, the sage of the Finger Lakes Chapter of Trout Unlimited, is its biggest fan."
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        "Decades old."
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        "(euphemistic, humorous) Decades old."
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