"town walls" meaning in English

{
  "forms": [
    {
      "form": "town wall",
      "tags": [
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "p",
        "sg": "town wall"
      },
      "expansion": "town walls pl (normally plural, singular town wall)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "British English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Norwegian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Swedish translations",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A large historic line of walls encircling a town that normally dates back at least to the Middle Ages."
      ],
      "id": "en-town_walls-en-noun-nPfCG~EL",
      "links": [
        [
          "Middle Ages",
          "Middle Ages"
        ]
      ],
      "raw_glosses": [
        "(UK, plural only) A large historic line of walls encircling a town that normally dates back at least to the Middle Ages."
      ],
      "tags": [
        "UK",
        "plural",
        "plural-normally",
        "plural-only"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "zhènqiáng",
          "sense": "wall surrounding a town",
          "word": "鎮牆 /镇墙"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "wall surrounding a town",
          "word": "kaupunginmuuri"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "wall surrounding a town",
          "word": "Stadtmauer"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "wall surrounding a town",
          "tags": [
            "plural"
          ],
          "word": "Stadtmauern"
        },
        {
          "code": "no",
          "lang": "Norwegian",
          "sense": "wall surrounding a town",
          "word": "bymur"
        },
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "wall surrounding a town",
          "tags": [
            "common-gender"
          ],
          "word": "stadsmur"
        }
      ]
    }
  ],
  "word": "town walls"
}

{
  "forms": [
    {
      "form": "town wall",
      "tags": [
        "singular"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "p",
        "sg": "town wall"
      },
      "expansion": "town walls pl (normally plural, singular town wall)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with German translations",
        "Terms with Mandarin translations",
        "Terms with Norwegian translations",
        "Terms with Swedish translations"
      ],
      "glosses": [
        "A large historic line of walls encircling a town that normally dates back at least to the Middle Ages."
      ],
      "links": [
        [
          "Middle Ages",
          "Middle Ages"
        ]
      ],
      "raw_glosses": [
        "(UK, plural only) A large historic line of walls encircling a town that normally dates back at least to the Middle Ages."
      ],
      "tags": [
        "UK",
        "plural",
        "plural-normally",
        "plural-only"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "zhènqiáng",
      "sense": "wall surrounding a town",
      "word": "鎮牆 /镇墙"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "wall surrounding a town",
      "word": "kaupunginmuuri"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "wall surrounding a town",
      "word": "Stadtmauer"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "wall surrounding a town",
      "tags": [
        "plural"
      ],
      "word": "Stadtmauern"
    },
    {
      "code": "no",
      "lang": "Norwegian",
      "sense": "wall surrounding a town",
      "word": "bymur"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "wall surrounding a town",
      "tags": [
        "common-gender"
      ],
      "word": "stadsmur"
    }
  ],
  "word": "town walls"
}