"decan" meaning in Gaulois

{
  "categories": [
    {
      "kind": "other",
      "name": "Gaulois",
      "orig": "gaulois",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "decametos"
    }
  ],
  "etymology_texts": [
    "Mot attesté dans un morceau de tuile de Châteaubleau^([1])^([2]).",
    "Issu de la racine indo-européenne *dék̂m̥(t)- (dix)^([1])^([2]).",
    "Rapproché du vieil irlandais deich, du gallois deg, du cornique et du breton dec, du latin decem, du sanskrit dáśa, etc.^([1])^([2])."
  ],
  "lang": "Gaulois",
  "lang_code": "gaulois",
  "pos": "adj",
  "pos_title": "Adjectif numéral",
  "senses": [
    {
      "glosses": [
        "Dix."
      ],
      "id": "fr-decan-gaulois-adj-a91Gwkwq"
    }
  ],
  "tags": [
    "numeral"
  ],
  "word": "decan"
}

{
  "categories": [
    "gaulois"
  ],
  "derived": [
    {
      "word": "decametos"
    }
  ],
  "etymology_texts": [
    "Mot attesté dans un morceau de tuile de Châteaubleau^([1])^([2]).",
    "Issu de la racine indo-européenne *dék̂m̥(t)- (dix)^([1])^([2]).",
    "Rapproché du vieil irlandais deich, du gallois deg, du cornique et du breton dec, du latin decem, du sanskrit dáśa, etc.^([1])^([2])."
  ],
  "lang": "Gaulois",
  "lang_code": "gaulois",
  "pos": "adj",
  "pos_title": "Adjectif numéral",
  "senses": [
    {
      "glosses": [
        "Dix."
      ]
    }
  ],
  "tags": [
    "numeral"
  ],
  "word": "decan"
}