"acre's breadth" meaning in English

{
  "etymology_text": "From an ordinance by Edward I of England fixing the size of an acre as a 'furlong in length and four poles in breadth'.",
  "forms": [
    {
      "form": "acre's breadths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~",
        "head": "acre's breadth"
      },
      "expansion": "acre's breadth (countable and uncountable, plural acre's breadths)",
      "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"
        }
      ],
      "glosses": [
        "Chain; A unit of length equal to 22 yards."
      ],
      "id": "en-acre's_breadth-en-noun-RKxSfd6l",
      "links": [
        [
          "Chain",
          "chain"
        ]
      ],
      "raw_glosses": [
        "(historical) Chain; A unit of length equal to 22 yards."
      ],
      "synonyms": [
        {
          "word": "acre-breadth"
        },
        {
          "word": "acre breadth"
        }
      ],
      "tags": [
        "countable",
        "historical",
        "uncountable"
      ],
      "wikipedia": [
        "Edward I of England"
      ]
    }
  ],
  "word": "acre's breadth"
}

{
  "etymology_text": "From an ordinance by Edward I of England fixing the size of an acre as a 'furlong in length and four poles in breadth'.",
  "forms": [
    {
      "form": "acre's breadths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~",
        "head": "acre's breadth"
      },
      "expansion": "acre's breadth (countable and uncountable, plural acre's breadths)",
      "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",
        "English terms with historical senses",
        "English uncountable nouns"
      ],
      "glosses": [
        "Chain; A unit of length equal to 22 yards."
      ],
      "links": [
        [
          "Chain",
          "chain"
        ]
      ],
      "raw_glosses": [
        "(historical) Chain; A unit of length equal to 22 yards."
      ],
      "tags": [
        "countable",
        "historical",
        "uncountable"
      ],
      "wikipedia": [
        "Edward I of England"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "acre-breadth"
    },
    {
      "word": "acre breadth"
    }
  ],
  "word": "acre's breadth"
}