"acre" meaning in Latin

{
  "forms": [
    {
      "form": "ācre",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "adjective form",
        "head": "ācre"
      },
      "expansion": "ācre",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 13 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "ācer"
        }
      ],
      "glosses": [
        "neuter nominative/accusative/vocative singular of ācer"
      ],
      "id": "en-acre-la-adj-s5t~xv6V",
      "links": [
        [
          "ācer",
          "acer#Latin"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "neuter",
        "nominative",
        "singular",
        "vocative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈaː.krɛ]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[ˈaː.kre]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "acre"
}

{
  "categories": [
    "Pages with 13 entries",
    "Pages with entries",
    "es:England",
    "es:United Kingdom",
    "es:United States",
    "es:Units of measure"
  ],
  "forms": [
    {
      "form": "ācre",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "adjective form",
        "head": "ācre"
      },
      "expansion": "ācre",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Latin 2-syllable words",
        "Latin adjective forms",
        "Latin entries with incorrect language header",
        "Latin non-lemma forms",
        "Latin terms with IPA pronunciation",
        "Pages with 13 entries",
        "Pages with entries"
      ],
      "form_of": [
        {
          "word": "ācer"
        }
      ],
      "glosses": [
        "neuter nominative/accusative/vocative singular of ācer"
      ],
      "links": [
        [
          "ācer",
          "acer#Latin"
        ]
      ],
      "tags": [
        "accusative",
        "form-of",
        "neuter",
        "nominative",
        "singular",
        "vocative"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ˈaː.krɛ]",
      "tags": [
        "Classical-Latin"
      ]
    },
    {
      "ipa": "[ˈaː.kre]",
      "note": "modern Italianate Ecclesiastical"
    }
  ],
  "word": "acre"
}