"þo" meaning in Middle English

{
  "head_templates": [
    {
      "args": {
        "1": "enm",
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      "expansion": "þo",
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  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "pron",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "thou",
          "word": "þou"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "Middle English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "Middle English pronouns",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of þou (“thou”)"
      ],
      "id": "en-þo-enm-pron-RC9w9g64",
      "links": [
        [
          "þou",
          "þou#Middle_English:_thou"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "þo"
}

{
  "categories": [
    "Old Swedish adverbs",
    "Old Swedish conjunctions",
    "Old Swedish entries with incorrect language header",
    "Old Swedish lemmas",
    "Old Swedish terms derived from Old Norse"
  ],
  "head_templates": [
    {
      "args": {
        "1": "enm",
        "2": "pronoun"
      },
      "expansion": "þo",
      "name": "head"
    }
  ],
  "lang": "Middle English",
  "lang_code": "enm",
  "pos": "pron",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "thou",
          "word": "þou"
        }
      ],
      "categories": [
        "Middle English entries with incorrect language header",
        "Middle English lemmas",
        "Middle English pronouns"
      ],
      "glosses": [
        "Alternative form of þou (“thou”)"
      ],
      "links": [
        [
          "þou",
          "þou#Middle_English:_thou"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative"
      ]
    }
  ],
  "word": "þo"
}