"lost errand" meaning in English

{
  "forms": [
    {
      "form": "lost errands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lost errand (plural lost errands)",
      "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"
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          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "1891, Charles Dickens, A Bride of a Summer's Day:",
          "text": "The detective expressed his conviction that they were both on a lost errand. He was convinced that the boy would not make his appearance; although when pressed by Clive to do so, he declined to give the reasons for his conviction.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of fool's errand"
      ],
      "id": "en-lost_errand-en-noun-A5HE0JUU",
      "links": [
        [
          "fool's errand",
          "fool's errand#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Synonym of fool's errand"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "fool's errand"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
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      "audio": "En-au-lost errand.ogg",
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  "word": "lost errand"
}

{
  "forms": [
    {
      "form": "lost errands",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "lost errand (plural lost errands)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1891, Charles Dickens, A Bride of a Summer's Day:",
          "text": "The detective expressed his conviction that they were both on a lost errand. He was convinced that the boy would not make his appearance; although when pressed by Clive to do so, he declined to give the reasons for his conviction.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of fool's errand"
      ],
      "links": [
        [
          "fool's errand",
          "fool's errand#English"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) Synonym of fool's errand"
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "fool's errand"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
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  "word": "lost errand"
}