"letrin" meaning in Breton

{
  "categories": [
    {
      "kind": "other",
      "name": "Mots en breton issus d’un mot en moyen breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en breton",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Breton",
      "orig": "breton",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du moyen breton letrin."
  ],
  "forms": [
    {
      "form": "letrinoù",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en breton du christianisme",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Lutrin."
      ],
      "id": "fr-letrin-br-noun-SMLC8lxR",
      "topics": [
        "Christianity"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Meubles en breton",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Pupitre."
      ],
      "id": "fr-letrin-br-noun-1wopJUem",
      "topics": [
        "furniture"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈle.trĩn\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "letrin"
}

{
  "categories": [
    "Mots en breton issus d’un mot en moyen breton",
    "Noms communs en breton",
    "breton"
  ],
  "etymology_texts": [
    "Du moyen breton letrin."
  ],
  "forms": [
    {
      "form": "letrinoù",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Breton",
  "lang_code": "br",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en breton du christianisme"
      ],
      "glosses": [
        "Lutrin."
      ],
      "topics": [
        "Christianity"
      ]
    },
    {
      "categories": [
        "Meubles en breton"
      ],
      "glosses": [
        "Pupitre."
      ],
      "topics": [
        "furniture"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈle.trĩn\\"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "letrin"
}