"nef" meaning in Cornique

{
  "categories": [
    {
      "kind": "other",
      "name": "Noms communs en cornique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Cornique",
      "orig": "cornique",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "À comparer avec les mots neñv en breton, nef en gallois, neamh en gaélique, nemos en gaulois (sens identique)."
  ],
  "lang": "Cornique",
  "lang_code": "kw",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en cornique de la religion",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Ciel."
      ],
      "id": "fr-nef-kw-noun-DP0DKfU0",
      "topics": [
        "religion"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "nef"
}

{
  "categories": [
    "Noms communs en cornique",
    "cornique"
  ],
  "etymology_texts": [
    "À comparer avec les mots neñv en breton, nef en gallois, neamh en gaélique, nemos en gaulois (sens identique)."
  ],
  "lang": "Cornique",
  "lang_code": "kw",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en cornique de la religion"
      ],
      "glosses": [
        "Ciel."
      ],
      "topics": [
        "religion"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "nef"
}