"no mean feat" meaning in English

{
  "forms": [
    {
      "form": "no mean feats",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "no mean feat (countable and uncountable, plural no mean feats)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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      "examples": [
        {
          "ref": "2022 October 3, Dwitght Garner, “Anthony Bourdain’s New Biography: Light on Subtlety, Heavy on Grit”, in The New York Times",
          "text": "The older me, the one who prefers wine to fizz, wishes Leerhsen had more to say about things like: a) the elite and vernacular food worlds pre- and post-Bourdain; b) how Bourdain walked a moral tightrope across the conventions of travel writing and reporting, no mean feat for a wealthy white man in skinny jeans; […].",
          "type": "quotation"
        },
        {
          "ref": "2023 October 4, Richard Foster, “New operator enters at number one”, in RAIL, number 993, page 33",
          "text": "Opening a new railway is no mean feat at the best of times, but the Elizabeth Line had its own challenges.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A laudable triumph of great difficulty; no small feat."
      ],
      "id": "en-no_mean_feat-en-noun-FvmmmvXs",
      "links": [
        [
          "laudable",
          "laudable"
        ],
        [
          "triumph",
          "triumph"
        ],
        [
          "difficulty",
          "difficulty"
        ]
      ],
      "raw_glosses": [
        "(litotes) A laudable triumph of great difficulty; no small feat."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
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      "audio": "En-au-no mean feat.ogg",
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      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d7/En-au-no_mean_feat.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "no mean feat"
}

{
  "forms": [
    {
      "form": "no mean feats",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
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      },
      "expansion": "no mean feat (countable and uncountable, plural no mean feats)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "ref": "2022 October 3, Dwitght Garner, “Anthony Bourdain’s New Biography: Light on Subtlety, Heavy on Grit”, in The New York Times",
          "text": "The older me, the one who prefers wine to fizz, wishes Leerhsen had more to say about things like: a) the elite and vernacular food worlds pre- and post-Bourdain; b) how Bourdain walked a moral tightrope across the conventions of travel writing and reporting, no mean feat for a wealthy white man in skinny jeans; […].",
          "type": "quotation"
        },
        {
          "ref": "2023 October 4, Richard Foster, “New operator enters at number one”, in RAIL, number 993, page 33",
          "text": "Opening a new railway is no mean feat at the best of times, but the Elizabeth Line had its own challenges.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A laudable triumph of great difficulty; no small feat."
      ],
      "links": [
        [
          "laudable",
          "laudable"
        ],
        [
          "triumph",
          "triumph"
        ],
        [
          "difficulty",
          "difficulty"
        ]
      ],
      "raw_glosses": [
        "(litotes) A laudable triumph of great difficulty; no small feat."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
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      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/d/d7/En-au-no_mean_feat.ogg",
      "tags": [
        "Australia"
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      "text": "Audio (AU)"
    }
  ],
  "word": "no mean feat"
}