"underpad" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "pad"
      },
      "expansion": "under- + pad",
      "name": "prefix"
    }
  ],
  "etymology_text": "From under- + pad.",
  "forms": [
    {
      "form": "underpads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underpad (plural underpads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "95 5",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w+disamb"
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        {
          "_dis": "75 25",
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w+disamb"
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          "parents": [],
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          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
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      ],
      "glosses": [
        "A mattress protector."
      ],
      "id": "en-underpad-en-noun-ptWu~gch",
      "links": [
        [
          "mattress protector",
          "mattress protector"
        ]
      ]
    },
    {
      "glosses": [
        "A padding layer underneath a carpet to prevent skidding."
      ],
      "id": "en-underpad-en-noun-xicBVRdw",
      "links": [
        [
          "carpet",
          "carpet"
        ],
        [
          "skid",
          "skid"
        ]
      ]
    }
  ],
  "wikipedia": [
    "underpad"
  ],
  "word": "underpad"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms prefixed with under-",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "pad"
      },
      "expansion": "under- + pad",
      "name": "prefix"
    }
  ],
  "etymology_text": "From under- + pad.",
  "forms": [
    {
      "form": "underpads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "underpad (plural underpads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A mattress protector."
      ],
      "links": [
        [
          "mattress protector",
          "mattress protector"
        ]
      ]
    },
    {
      "glosses": [
        "A padding layer underneath a carpet to prevent skidding."
      ],
      "links": [
        [
          "carpet",
          "carpet"
        ],
        [
          "skid",
          "skid"
        ]
      ]
    }
  ],
  "wikipedia": [
    "underpad"
  ],
  "word": "underpad"
}