"glory days" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "glory",
        "3": "days"
      },
      "expansion": "glory + days",
      "name": "compound"
    }
  ],
  "etymology_text": "glory + days",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "glory days pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French links with redundant wikilinks",
          "parents": [
            "Links with redundant wikilinks",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "The San Francisco 49ers had their glory days under Joe Montana and may be making a comeback under Alex Smith."
        }
      ],
      "glosses": [
        "Period in which an individual or group exhibits great success and wealth"
      ],
      "id": "en-glory_days-en-noun-tef9Evbl",
      "links": [
        [
          "exhibits",
          "exhibits"
        ],
        [
          "success",
          "success"
        ],
        [
          "wealth",
          "wealth"
        ]
      ],
      "related": [
        {
          "word": "back in the day"
        }
      ],
      "synonyms": [
        {
          "word": "heyday"
        }
      ],
      "tags": [
        "plural",
        "plural-only"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "Translations",
          "tags": [
            "feminine"
          ],
          "word": "heures de gloire"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "eikō no hibi",
          "sense": "Translations",
          "word": "栄光の日々"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "zenseiki",
          "sense": "Translations",
          "word": "全盛期"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "Translations",
          "tags": [
            "common-gender"
          ],
          "word": "glansdag"
        }
      ]
    }
  ],
  "word": "glory days"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "glory",
        "3": "days"
      },
      "expansion": "glory + days",
      "name": "compound"
    }
  ],
  "etymology_text": "glory + days",
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "glory days pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "back in the day"
    }
  ],
  "senses": [
    {
      "categories": [
        "English compound terms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "French links with redundant wikilinks",
        "Translation table header lacks gloss"
      ],
      "examples": [
        {
          "text": "The San Francisco 49ers had their glory days under Joe Montana and may be making a comeback under Alex Smith."
        }
      ],
      "glosses": [
        "Period in which an individual or group exhibits great success and wealth"
      ],
      "links": [
        [
          "exhibits",
          "exhibits"
        ],
        [
          "success",
          "success"
        ],
        [
          "wealth",
          "wealth"
        ]
      ],
      "tags": [
        "plural",
        "plural-only"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "heyday"
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "Translations",
      "tags": [
        "feminine"
      ],
      "word": "heures de gloire"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "eikō no hibi",
      "sense": "Translations",
      "word": "栄光の日々"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "zenseiki",
      "sense": "Translations",
      "word": "全盛期"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "Translations",
      "tags": [
        "common-gender"
      ],
      "word": "glansdag"
    }
  ],
  "word": "glory days"
}