"ur-" meaning in Proto-Ryukyuan

{
  "descendants": [
    {
      "descendants": [
        {
          "lang": "Kikai",
          "lang_code": "kzg",
          "roman": "uyui",
          "word": "売ゆい"
        },
        {
          "lang": "Kunigami",
          "lang_code": "xug",
          "roman": "un",
          "word": "売ん"
        },
        {
          "lang": "Northern Amami Ōshima",
          "lang_code": "ryn",
          "roman": "ururi",
          "word": "売るり"
        },
        {
          "lang": "Okinawan",
          "lang_code": "ryu",
          "roman": "uyun",
          "word": "売ゆん"
        },
        {
          "lang": "Okinoerabu",
          "lang_code": "okn",
          "roman": "uyun",
          "word": "売ゆん"
        },
        {
          "lang": "Southern Amami Ōshima",
          "lang_code": "ams",
          "roman": "uyum",
          "word": "売ゆむっ"
        },
        {
          "lang": "Tokunoshima",
          "lang_code": "tkn",
          "roman": "urï",
          "word": "売りぃ"
        },
        {
          "lang": "Yoron",
          "lang_code": "yox",
          "roman": "uyun",
          "word": "売ゆん"
        }
      ],
      "lang": "Northern Ryukyuan",
      "lang_code": "unknown"
    },
    {
      "descendants": [
        {
          "lang": "Miyako",
          "lang_code": "mvi",
          "roman": "v",
          "word": "売"
        },
        {
          "lang": "Yonaguni",
          "lang_code": "yoi",
          "roman": "urun",
          "word": "売るん"
        }
      ],
      "lang": "Southern Ryukyuan",
      "lang_code": "unknown"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "jpx-pro",
        "3": "*ur-"
      },
      "expansion": "Proto-Japonic *ur-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Japonic *ur-.",
  "head_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "verb"
      },
      "expansion": "*ur-",
      "name": "head"
    }
  ],
  "lang": "Proto-Ryukyuan",
  "lang_code": "jpx-ryu-pro",
  "original_title": "Reconstruction:Proto-Ryukyuan/ur-",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Proto-Ryukyuan entries with incorrect language header",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "to sell"
      ],
      "id": "en-ur--jpx-ryu-pro-verb-l6CkWB53",
      "links": [
        [
          "sell",
          "sell"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "ur-"
}

{
  "descendants": [
    {
      "descendants": [
        {
          "lang": "Kikai",
          "lang_code": "kzg",
          "roman": "uyui",
          "word": "売ゆい"
        },
        {
          "lang": "Kunigami",
          "lang_code": "xug",
          "roman": "un",
          "word": "売ん"
        },
        {
          "lang": "Northern Amami Ōshima",
          "lang_code": "ryn",
          "roman": "ururi",
          "word": "売るり"
        },
        {
          "lang": "Okinawan",
          "lang_code": "ryu",
          "roman": "uyun",
          "word": "売ゆん"
        },
        {
          "lang": "Okinoerabu",
          "lang_code": "okn",
          "roman": "uyun",
          "word": "売ゆん"
        },
        {
          "lang": "Southern Amami Ōshima",
          "lang_code": "ams",
          "roman": "uyum",
          "word": "売ゆむっ"
        },
        {
          "lang": "Tokunoshima",
          "lang_code": "tkn",
          "roman": "urï",
          "word": "売りぃ"
        },
        {
          "lang": "Yoron",
          "lang_code": "yox",
          "roman": "uyun",
          "word": "売ゆん"
        }
      ],
      "lang": "Northern Ryukyuan",
      "lang_code": "unknown"
    },
    {
      "descendants": [
        {
          "lang": "Miyako",
          "lang_code": "mvi",
          "roman": "v",
          "word": "売"
        },
        {
          "lang": "Yonaguni",
          "lang_code": "yoi",
          "roman": "urun",
          "word": "売るん"
        }
      ],
      "lang": "Southern Ryukyuan",
      "lang_code": "unknown"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "jpx-pro",
        "3": "*ur-"
      },
      "expansion": "Proto-Japonic *ur-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Proto-Japonic *ur-.",
  "head_templates": [
    {
      "args": {
        "1": "jpx-ryu-pro",
        "2": "verb"
      },
      "expansion": "*ur-",
      "name": "head"
    }
  ],
  "lang": "Proto-Ryukyuan",
  "lang_code": "jpx-ryu-pro",
  "original_title": "Reconstruction:Proto-Ryukyuan/ur-",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Proto-Ryukyuan entries with incorrect language header",
        "Proto-Ryukyuan lemmas",
        "Proto-Ryukyuan terms derived from Proto-Japonic",
        "Proto-Ryukyuan terms inherited from Proto-Japonic",
        "Proto-Ryukyuan verbs"
      ],
      "glosses": [
        "to sell"
      ],
      "links": [
        [
          "sell",
          "sell"
        ]
      ],
      "tags": [
        "reconstruction"
      ]
    }
  ],
  "word": "ur-"
}