"河原" meaning in Old Japanese

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "ja",
            "2": "河原",
            "tr": "kawara"
          },
          "expansion": "Japanese: 河原 (kawara)",
          "name": "desc"
        }
      ],
      "text": "Japanese: 河原 (kawara)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ojp",
        "2": "河",
        "3": "原",
        "sort": "かはら",
        "t1": "river",
        "t2": "plain",
        "tr1": "kapa",
        "tr2": "para"
      },
      "expansion": "河 (kapa, “river”) + 原 (para, “plain”)",
      "name": "com"
    }
  ],
  "etymology_text": "Shift from a compound of 河 (kapa, “river”) + 原 (para, “plain”), with either one of the pa syllables lost due to haplology.",
  "forms": [
    {
      "form": "kapara",
      "tags": [
        "romanization"
      ]
    },
    {
      "form": "かはら",
      "tags": [
        "hiragana"
      ]
    }
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        "tr": "kapara"
      },
      "expansion": "河原 (kapara) (kana かはら)",
      "name": "head"
    }
  ],
  "lang": "Old Japanese",
  "lang_code": "ojp",
  "pos": "noun",
  "senses": [
    {
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          "kind": "other",
          "name": "Japanese links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
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        },
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        }
      ],
      "derived": [
        {
          "roman": "ama no2 kapara",
          "word": "天の河原"
        },
        {
          "roman": "ama no2 yasu no2 kapara",
          "word": "天の安の河原"
        }
      ],
      "glosses": [
        "a dry riverbed"
      ],
      "id": "en-河原-ojp-noun-6nDZadHf",
      "links": [
        [
          "dry",
          "dry"
        ],
        [
          "riverbed",
          "riverbed"
        ]
      ],
      "synonyms": [
        {
          "word": "川原"
        }
      ],
      "wikipedia": [
        "Daijisen",
        "ja:松村明"
      ]
    }
  ],
  "word": "河原"
}

{
  "derived": [
    {
      "roman": "ama no2 kapara",
      "word": "天の河原"
    },
    {
      "roman": "ama no2 yasu no2 kapara",
      "word": "天の安の河原"
    }
  ],
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
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            "2": "河原",
            "tr": "kawara"
          },
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          "name": "desc"
        }
      ],
      "text": "Japanese: 河原 (kawara)"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "ojp",
        "2": "河",
        "3": "原",
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        "t1": "river",
        "t2": "plain",
        "tr1": "kapa",
        "tr2": "para"
      },
      "expansion": "河 (kapa, “river”) + 原 (para, “plain”)",
      "name": "com"
    }
  ],
  "etymology_text": "Shift from a compound of 河 (kapa, “river”) + 原 (para, “plain”), with either one of the pa syllables lost due to haplology.",
  "forms": [
    {
      "form": "kapara",
      "tags": [
        "romanization"
      ]
    },
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      "form": "かはら",
      "tags": [
        "hiragana"
      ]
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      "expansion": "河原 (kapara) (kana かはら)",
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  ],
  "lang": "Old Japanese",
  "lang_code": "ojp",
  "pos": "noun",
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        "Old Japanese terms with redundant sortkeys",
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      ],
      "glosses": [
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      ],
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        ],
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          "riverbed",
          "riverbed"
        ]
      ],
      "wikipedia": [
        "Daijisen",
        "ja:松村明"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "川原"
    }
  ],
  "word": "河原"
}