"brightening up" meaning in English

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  "lang_code": "en",
  "pos": "verb",
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      "examples": [
        {
          "ref": "1962 October, Brian Haresnape, “Focus on B.R. passenger stations”, in Modern Railways, page 255",
          "text": "In other words, what we can expect to see henceforward, provided that all Regions make the effort, is a welcome brightening-up of stations and improvement in the general standard of amenities.",
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      "form_of": [
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          "word": "brighten up"
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        "present participle and gerund of brighten up"
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      "id": "en-brightening_up-en-verb-U92SyQM5",
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          "brighten up",
          "brighten up#English"
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  "word": "brightening up"
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  "lang_code": "en",
  "pos": "verb",
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          "ref": "1962 October, Brian Haresnape, “Focus on B.R. passenger stations”, in Modern Railways, page 255",
          "text": "In other words, what we can expect to see henceforward, provided that all Regions make the effort, is a welcome brightening-up of stations and improvement in the general standard of amenities.",
          "type": "quotation"
        }
      ],
      "form_of": [
        {
          "word": "brighten up"
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      "glosses": [
        "present participle and gerund of brighten up"
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          "brighten up",
          "brighten up#English"
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