"oi" meaning in Francés antiguo

{
  "categories": [
    {
      "kind": "other",
      "name": "FRO:Palabras sin transcripción fonética",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Francés antiguo",
      "parents": [],
      "source": "w"
    }
  ],
  "extra_sounds": {
    "pronunciación": "falta agregar"
  },
  "lang": "Francés antiguo",
  "lang_code": "fro",
  "pos": "verb",
  "pos_title": "forma verbal",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "FRO:Participios",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "FRO:Participios pasados",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Participio pasado de oir."
      ],
      "id": "es-oi-fro-verb-6wPsPybH",
      "sense_index": "1"
    }
  ],
  "sounds": [
    {
      "alternative": "oï"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "oi"
}

{
  "categories": [
    "FRO:Palabras sin transcripción fonética",
    "Francés antiguo"
  ],
  "extra_sounds": {
    "pronunciación": "falta agregar"
  },
  "lang": "Francés antiguo",
  "lang_code": "fro",
  "pos": "verb",
  "pos_title": "forma verbal",
  "senses": [
    {
      "categories": [
        "FRO:Participios",
        "FRO:Participios pasados"
      ],
      "glosses": [
        "Participio pasado de oir."
      ],
      "sense_index": "1"
    }
  ],
  "sounds": [
    {
      "alternative": "oï"
    }
  ],
  "tags": [
    "form-of"
  ],
  "word": "oi"
}