"oy" meaning in Cornique

{
  "categories": [
    {
      "kind": "other",
      "name": "Aliments en cornique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lexique en cornique de la zoologie",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lexique en cornique de l’anatomie",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en cornique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Cornique",
      "orig": "cornique",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Voir le mot breton vi."
  ],
  "lang": "Cornique",
  "lang_code": "kw",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Œuf."
      ],
      "id": "fr-oy-kw-noun-I0qPSmEl"
    }
  ],
  "tags": [
    "masculine",
    "plural"
  ],
  "word": "oy"
}

{
  "categories": [
    "Aliments en cornique",
    "Lexique en cornique de la zoologie",
    "Lexique en cornique de l’anatomie",
    "Noms communs en cornique",
    "cornique"
  ],
  "etymology_texts": [
    "Voir le mot breton vi."
  ],
  "lang": "Cornique",
  "lang_code": "kw",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Œuf."
      ]
    }
  ],
  "tags": [
    "masculine",
    "plural"
  ],
  "word": "oy"
}