"縄文時代" meaning in Japanese

{
  "forms": [
    {
      "form": "縄文時代",
      "ruby": [
        [
          "縄",
          "じょう"
        ],
        [
          "文",
          "もん"
        ],
        [
          "時",
          "じ"
        ],
        [
          "代",
          "だい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Jōmon-jidai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "繩文時代",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper",
        "2": "^じょうもん-じだい"
      },
      "expansion": "縄(じょう)文(もん)時(じ)代(だい) • (Jōmon-jidai)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Japanese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese links with redundant wikilinks",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms read with on'yomi",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with 4 kanji",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with multiple readings",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Japanese terms with redundant sortkeys",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "The Jomon Period of ancient Japan"
      ],
      "id": "en-縄文時代-ja-noun-ZzgGthlL",
      "links": [
        [
          "Japan",
          "Japan"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[d͡ʑo̞ːmõ̞ɲ̟d͡ʑida̠i]"
    }
  ],
  "word": "縄文時代"
}

{
  "forms": [
    {
      "form": "縄文時代",
      "ruby": [
        [
          "縄",
          "じょう"
        ],
        [
          "文",
          "もん"
        ],
        [
          "時",
          "じ"
        ],
        [
          "代",
          "だい"
        ]
      ],
      "tags": [
        "canonical"
      ]
    },
    {
      "form": "Jōmon-jidai",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "繩文時代",
      "tags": [
        "alternative",
        "kanji",
        "kyūjitai"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "proper",
        "2": "^じょうもん-じだい"
      },
      "expansion": "縄(じょう)文(もん)時(じ)代(だい) • (Jōmon-jidai)",
      "name": "ja-pos"
    }
  ],
  "lang": "Japanese",
  "lang_code": "ja",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Japanese entries with incorrect language header",
        "Japanese lemmas",
        "Japanese links with redundant alt parameters",
        "Japanese links with redundant wikilinks",
        "Japanese proper nouns",
        "Japanese terms read with on'yomi",
        "Japanese terms spelled with first grade kanji",
        "Japanese terms spelled with fourth grade kanji",
        "Japanese terms spelled with second grade kanji",
        "Japanese terms spelled with third grade kanji",
        "Japanese terms spelled with 代 read as だい",
        "Japanese terms spelled with 文 read as もん",
        "Japanese terms spelled with 時 read as じ",
        "Japanese terms spelled with 縄 read as じょう",
        "Japanese terms with 4 kanji",
        "Japanese terms with IPA pronunciation",
        "Japanese terms with IPA pronunciation missing pitch accent",
        "Japanese terms with multiple readings",
        "Japanese terms with non-redundant non-automated sortkeys",
        "Japanese terms with redundant sortkeys",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "The Jomon Period of ancient Japan"
      ],
      "links": [
        [
          "Japan",
          "Japan"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[d͡ʑo̞ːmõ̞ɲ̟d͡ʑida̠i]"
    }
  ],
  "word": "縄文時代"
}