"dementiers" meaning in Ancien français

{
  "categories": [
    {
      "kind": "other",
      "name": "Conjonctions en ancien français",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ancien français",
      "orig": "ancien français",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "word": "endementiers"
    }
  ],
  "etymology_texts": [
    "Voir dementres, mentres."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "conj",
  "pos_title": "Conjonction",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en ancien français",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "dementiers que…",
          "translation": "pendant que…"
        }
      ],
      "glosses": [
        "Pendant."
      ],
      "id": "fr-dementiers-fro-conj-pUxuOuZ3"
    }
  ],
  "word": "dementiers"
}

{
  "categories": [
    "Conjonctions en ancien français",
    "ancien français"
  ],
  "derived": [
    {
      "word": "endementiers"
    }
  ],
  "etymology_texts": [
    "Voir dementres, mentres."
  ],
  "lang": "Ancien français",
  "lang_code": "fro",
  "pos": "conj",
  "pos_title": "Conjonction",
  "senses": [
    {
      "categories": [
        "Exemples en ancien français"
      ],
      "examples": [
        {
          "text": "dementiers que…",
          "translation": "pendant que…"
        }
      ],
      "glosses": [
        "Pendant."
      ]
    }
  ],
  "word": "dementiers"
}