"bistra" meaning in Ido

{
  "categories": [
    {
      "kind": "other",
      "name": "Adjectifs en ido",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Couleurs en ido",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en ido",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Ido",
      "orig": "ido",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Bistre."
      ],
      "id": "fr-bistra-io-adj-HN3HNxfb"
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ˈstra\\"
    }
  ],
  "word": "bistra"
}

{
  "categories": [
    "Adjectifs en ido",
    "Couleurs en ido",
    "Lemmes en ido",
    "ido"
  ],
  "lang": "Ido",
  "lang_code": "io",
  "pos": "adj",
  "pos_title": "Adjectif",
  "senses": [
    {
      "glosses": [
        "Bistre."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\bi.ˈstra\\"
    }
  ],
  "word": "bistra"
}