"iu" meaning in Old Saxon

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gml",
            "2": "jû"
          },
          "expansion": "Middle Low German: jû, jûw\nLow German: ju, jug, jo, jau, u, ugg",
          "name": "desctree"
        }
      ],
      "text": "Middle Low German: jû, jûw\nLow German: ju, jug, jo, jau, u, ugg"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "osx",
        "2": "gmw-pro",
        "3": "*iwwiz"
      },
      "expansion": "Proto-West Germanic *iwwiz",
      "name": "inh"
    },
    {
      "args": {
        "1": "osx",
        "2": "gem-pro",
        "3": "*iwwiz"
      },
      "expansion": "Proto-Germanic *iwwiz",
      "name": "inh"
    },
    {
      "args": {
        "1": "gem-pro",
        "2": "*izwiz"
      },
      "expansion": "*izwiz",
      "name": "m"
    },
    {
      "args": {
        "1": "ang",
        "2": "ēow"
      },
      "expansion": "Old English ēow",
      "name": "cog"
    },
    {
      "args": {
        "1": "goh",
        "2": "iu"
      },
      "expansion": "Old High German iu",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-West Germanic *iwwiz, from Proto-Germanic *iwwiz, a variant of *izwiz, whence also Old English ēow, Old High German iu.",
  "head_templates": [
    {
      "args": {
        "1": "osx",
        "2": "pronoun form"
      },
      "expansion": "iu",
      "name": "head"
    }
  ],
  "lang": "Old Saxon",
  "lang_code": "osx",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Old Saxon entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "gi"
        }
      ],
      "glosses": [
        "accusative/dative of gi"
      ],
      "id": "en-iu-osx-pron-UtqoZfpV",
      "links": [
        [
          "gi",
          "gi#Old Saxon"
        ]
      ],
      "synonyms": [
        {
          "word": "eu"
        },
        {
          "word": "iuu"
        },
        {
          "word": "giu"
        }
      ],
      "tags": [
        "accusative",
        "dative",
        "form-of"
      ]
    }
  ],
  "word": "iu"
}

{
  "descendants": [
    {
      "depth": 1,
      "templates": [
        {
          "args": {
            "1": "gml",
            "2": "jû"
          },
          "expansion": "Middle Low German: jû, jûw\nLow German: ju, jug, jo, jau, u, ugg",
          "name": "desctree"
        }
      ],
      "text": "Middle Low German: jû, jûw\nLow German: ju, jug, jo, jau, u, ugg"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "osx",
        "2": "gmw-pro",
        "3": "*iwwiz"
      },
      "expansion": "Proto-West Germanic *iwwiz",
      "name": "inh"
    },
    {
      "args": {
        "1": "osx",
        "2": "gem-pro",
        "3": "*iwwiz"
      },
      "expansion": "Proto-Germanic *iwwiz",
      "name": "inh"
    },
    {
      "args": {
        "1": "gem-pro",
        "2": "*izwiz"
      },
      "expansion": "*izwiz",
      "name": "m"
    },
    {
      "args": {
        "1": "ang",
        "2": "ēow"
      },
      "expansion": "Old English ēow",
      "name": "cog"
    },
    {
      "args": {
        "1": "goh",
        "2": "iu"
      },
      "expansion": "Old High German iu",
      "name": "cog"
    }
  ],
  "etymology_text": "From Proto-West Germanic *iwwiz, from Proto-Germanic *iwwiz, a variant of *izwiz, whence also Old English ēow, Old High German iu.",
  "head_templates": [
    {
      "args": {
        "1": "osx",
        "2": "pronoun form"
      },
      "expansion": "iu",
      "name": "head"
    }
  ],
  "lang": "Old Saxon",
  "lang_code": "osx",
  "pos": "pron",
  "senses": [
    {
      "categories": [
        "Old Saxon entries with incorrect language header",
        "Old Saxon non-lemma forms",
        "Old Saxon pronoun forms",
        "Old Saxon terms derived from Proto-Germanic",
        "Old Saxon terms derived from Proto-West Germanic",
        "Old Saxon terms inherited from Proto-Germanic",
        "Old Saxon terms inherited from Proto-West Germanic"
      ],
      "form_of": [
        {
          "word": "gi"
        }
      ],
      "glosses": [
        "accusative/dative of gi"
      ],
      "links": [
        [
          "gi",
          "gi#Old Saxon"
        ]
      ],
      "tags": [
        "accusative",
        "dative",
        "form-of"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "eu"
    },
    {
      "word": "iuu"
    },
    {
      "word": "giu"
    }
  ],
  "word": "iu"
}