"prueba del algodón" meaning in Spanish

{
  "etymology_templates": [
    {
      "args": {
        "1": "cotton test"
      },
      "expansion": "“cotton test”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "cotton test"
      },
      "expansion": "Literally, “cotton test”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “cotton test”. The phrase comes from a detergent TV ad from the 1980shttps://www.youtube.com/watch?v=nsnIpoZVA_8 in which a butler passes a piece of cotton across a surface to prove that it is perfectly clean. At the end of the advert, the butler triumphantly proclaims \"the cotton doesn't deceive\".",
  "forms": [
    {
      "form": "pruebas del algodón",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "prueba del algodón f (plural pruebas del algodón)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Peninsular Spanish",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "acid test"
      ],
      "id": "en-prueba_del_algodón-es-noun-T3AQc-Ml",
      "links": [
        [
          "acid test",
          "acid test"
        ]
      ],
      "raw_glosses": [
        "(Spain) acid test"
      ],
      "related": [
        {
          "word": "el algodón no engaña"
        }
      ],
      "tags": [
        "Spain",
        "feminine"
      ]
    }
  ],
  "word": "prueba del algodón"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cotton test"
      },
      "expansion": "“cotton test”",
      "name": "m-g"
    },
    {
      "args": {
        "1": "cotton test"
      },
      "expansion": "Literally, “cotton test”",
      "name": "lit"
    }
  ],
  "etymology_text": "Literally, “cotton test”. The phrase comes from a detergent TV ad from the 1980shttps://www.youtube.com/watch?v=nsnIpoZVA_8 in which a butler passes a piece of cotton across a surface to prove that it is perfectly clean. At the end of the advert, the butler triumphantly proclaims \"the cotton doesn't deceive\".",
  "forms": [
    {
      "form": "pruebas del algodón",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "prueba del algodón f (plural pruebas del algodón)",
      "name": "es-noun"
    }
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "related": [
    {
      "word": "el algodón no engaña"
    }
  ],
  "senses": [
    {
      "categories": [
        "Peninsular Spanish",
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish nouns"
      ],
      "glosses": [
        "acid test"
      ],
      "links": [
        [
          "acid test",
          "acid test"
        ]
      ],
      "raw_glosses": [
        "(Spain) acid test"
      ],
      "tags": [
        "Spain",
        "feminine"
      ]
    }
  ],
  "word": "prueba del algodón"
}