"hobnail boot" meaning in English

{
  "forms": [
    {
      "form": "hobnail boots",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hobnail boot (plural hobnail boots)",
      "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"
          ],
          "source": "w"
        },
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          "source": "w"
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          "name": "Pages with entries",
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        },
        {
          "kind": "other",
          "name": "Terms with Norman translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Footwear",
          "orig": "en:Footwear",
          "parents": [
            "Clothing",
            "Human",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A heavy-duty, hard-wearing work boot with hobnails in the sole to make them last longer and to provide grip on muddy ground."
      ],
      "id": "en-hobnail_boot-en-noun-1YX4j0uj",
      "links": [
        [
          "hobnail",
          "hobnail"
        ],
        [
          "sole",
          "sole"
        ]
      ],
      "translations": [
        {
          "code": "nrf",
          "lang": "Norman",
          "sense": "a heavy-duty, hard-wearing work boot",
          "tags": [
            "feminine"
          ],
          "word": "botte à cliou"
        }
      ]
    }
  ],
  "word": "hobnail boot"
}

{
  "forms": [
    {
      "form": "hobnail boots",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hobnail boot (plural hobnail boots)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Norman translations",
        "en:Footwear"
      ],
      "glosses": [
        "A heavy-duty, hard-wearing work boot with hobnails in the sole to make them last longer and to provide grip on muddy ground."
      ],
      "links": [
        [
          "hobnail",
          "hobnail"
        ],
        [
          "sole",
          "sole"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "nrf",
      "lang": "Norman",
      "sense": "a heavy-duty, hard-wearing work boot",
      "tags": [
        "feminine"
      ],
      "word": "botte à cliou"
    }
  ],
  "word": "hobnail boot"
}