"or-" meaning in Middle Dutch

{
  "etymology_templates": [
    {
      "args": {
        "1": "dum",
        "2": "odt",
        "3": "ur-"
      },
      "expansion": "Old Dutch ur-",
      "name": "inh"
    },
    {
      "args": {
        "1": "dum",
        "2": "gem-pro",
        "3": "*uz-"
      },
      "expansion": "Proto-Germanic *uz-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Old Dutch ur-, or-, from Proto-Germanic *uz-.",
  "head_templates": [
    {
      "args": {
        "1": "dum",
        "2": "prefix"
      },
      "expansion": "or-",
      "name": "head"
    }
  ],
  "lang": "Middle Dutch",
  "lang_code": "dum",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Middle Dutch entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A prefix with a variety of meanings, but originally meaning \"out\" or \"original\"."
      ],
      "id": "en-or--dum-prefix-h7dP24Vl",
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "or-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "dum",
        "2": "odt",
        "3": "ur-"
      },
      "expansion": "Old Dutch ur-",
      "name": "inh"
    },
    {
      "args": {
        "1": "dum",
        "2": "gem-pro",
        "3": "*uz-"
      },
      "expansion": "Proto-Germanic *uz-",
      "name": "inh"
    }
  ],
  "etymology_text": "From Old Dutch ur-, or-, from Proto-Germanic *uz-.",
  "head_templates": [
    {
      "args": {
        "1": "dum",
        "2": "prefix"
      },
      "expansion": "or-",
      "name": "head"
    }
  ],
  "lang": "Middle Dutch",
  "lang_code": "dum",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "Middle Dutch entries with incorrect language header",
        "Middle Dutch lemmas",
        "Middle Dutch prefixes",
        "Middle Dutch terms derived from Old Dutch",
        "Middle Dutch terms derived from Proto-Germanic",
        "Middle Dutch terms inherited from Old Dutch",
        "Middle Dutch terms inherited from Proto-Germanic",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "glosses": [
        "A prefix with a variety of meanings, but originally meaning \"out\" or \"original\"."
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "or-"
}