"one-er" meaning in English

{
  "forms": [
    {
      "form": "one-ers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "one-er"
      },
      "expansion": "one-er (plural one-ers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "oner"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1841, Charles Dickens, The Old Curiosity Shop:",
          "text": "'Do they often go where glory waits 'em, and leave you here?'\n'Oh, yes; I believe you they do,' returned the small servant. 'Miss Sally's such a one-er for that, she is.'",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of oner"
      ],
      "id": "en-one-er-en-noun-BieL6XvB",
      "links": [
        [
          "oner",
          "oner#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "one-er"
}

{
  "forms": [
    {
      "form": "one-ers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "head": "one-er"
      },
      "expansion": "one-er (plural one-ers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "oner"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "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": "1841, Charles Dickens, The Old Curiosity Shop:",
          "text": "'Do they often go where glory waits 'em, and leave you here?'\n'Oh, yes; I believe you they do,' returned the small servant. 'Miss Sally's such a one-er for that, she is.'",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative form of oner"
      ],
      "links": [
        [
          "oner",
          "oner#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "one-er"
}