"Ren" meaning in Occitan

{
  "head_templates": [
    {
      "args": {
        "1": "oc",
        "2": "proper noun",
        "g": "m",
        "g2": "",
        "head": ""
      },
      "expansion": "Ren m",
      "name": "head"
    },
    {
      "args": {
        "1": "m"
      },
      "expansion": "Ren m",
      "name": "oc-proper noun"
    }
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Occitan entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 7 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "place",
          "langcode": "oc",
          "name": "Rivers",
          "orig": "oc:Rivers",
          "parents": [
            "Bodies of water",
            "Places",
            "Landforms",
            "Water",
            "Names",
            "Earth",
            "Liquids",
            "All topics",
            "Proper nouns",
            "Terms by semantic function",
            "Nature",
            "Matter",
            "Fundamental",
            "Nouns",
            "Chemistry",
            "Lemmas",
            "Sciences"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "Bas Ren"
        },
        {
          "word": "Naut Ren"
        }
      ],
      "glosses": [
        "Rhine (a river in Europe)"
      ],
      "id": "en-Ren-oc-name-VF1DjQMd",
      "links": [
        [
          "Rhine",
          "Rhine#English"
        ]
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "oc:Ren (fluvi)"
      ]
    }
  ],
  "word": "Ren"
}

{
  "derived": [
    {
      "word": "Bas Ren"
    },
    {
      "word": "Naut Ren"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "oc",
        "2": "proper noun",
        "g": "m",
        "g2": "",
        "head": ""
      },
      "expansion": "Ren m",
      "name": "head"
    },
    {
      "args": {
        "1": "m"
      },
      "expansion": "Ren m",
      "name": "oc-proper noun"
    }
  ],
  "lang": "Occitan",
  "lang_code": "oc",
  "pos": "name",
  "senses": [
    {
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        "Occitan lemmas",
        "Occitan masculine nouns",
        "Occitan proper nouns",
        "Pages with 7 entries",
        "Pages with entries",
        "oc:Rivers"
      ],
      "glosses": [
        "Rhine (a river in Europe)"
      ],
      "links": [
        [
          "Rhine",
          "Rhine#English"
        ]
      ],
      "tags": [
        "masculine"
      ],
      "wikipedia": [
        "oc:Ren (fluvi)"
      ]
    }
  ],
  "word": "Ren"
}