"'taint" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "contraction",
        "head": ""
      },
      "expansion": "'taint",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "'taint",
      "name": "en-cont"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "contraction",
  "senses": [
    {
      "alt_of": [
        {
          "word": "it ain't"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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          "source": "w"
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          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "1931, William Faulkner, Sanctuary:",
          "text": "“’Taint no need botherin her, then. You kin come around in the mawnin ...\n“’Taint no need of that,” Snopes said, take I’ll take you back to Memphis Sunday.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Contraction of it ain't."
      ],
      "id": "en-'taint-en-contraction-ufm~VVL9",
      "links": [
        [
          "it",
          "it#English"
        ],
        [
          "ain't",
          "ain't#English"
        ]
      ],
      "related": [
        {
          "word": "’tisn’t"
        }
      ],
      "synonyms": [
        {
          "word": "'tain't"
        },
        {
          "word": "taint"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "word": "'taint"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "contraction",
        "head": ""
      },
      "expansion": "'taint",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "'taint",
      "name": "en-cont"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "contraction",
  "related": [
    {
      "word": "’tisn’t"
    }
  ],
  "senses": [
    {
      "alt_of": [
        {
          "word": "it ain't"
        }
      ],
      "categories": [
        "English contractions",
        "English entries with incorrect language header",
        "English non-lemma forms",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1931, William Faulkner, Sanctuary:",
          "text": "“’Taint no need botherin her, then. You kin come around in the mawnin ...\n“’Taint no need of that,” Snopes said, take I’ll take you back to Memphis Sunday.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Contraction of it ain't."
      ],
      "links": [
        [
          "it",
          "it#English"
        ],
        [
          "ain't",
          "ain't#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "contraction"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "'tain't"
    },
    {
      "word": "taint"
    }
  ],
  "word": "'taint"
}