"льгота" meaning in Vieux slave

{
  "categories": [
    {
      "kind": "other",
      "name": "Adverbes en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Dérivations en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en russe suffixés avec -ота",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vieux slave",
      "orig": "vieux slave",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "lang": "Polonais",
      "lang_code": "pl",
      "word": "lgota"
    },
    {
      "lang": "Russe",
      "lang_code": "ru",
      "word": "льгота"
    },
    {
      "lang": "Slovaque",
      "lang_code": "sk",
      "word": "lehota"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "lhůta"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "Lhota"
    }
  ],
  "etymology_texts": [
    "Dérivé de льгъкъ, lĭgŭkŭ (« léger »), avec le suffixe -ота, -ota."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "adv",
  "pos_title": "Adverbe",
  "raw_tags": [
    "lĭgota"
  ],
  "senses": [
    {
      "glosses": [
        "Légèreté."
      ],
      "id": "fr-льгота-cu-adv-u1cxx8cK"
    }
  ],
  "word": "льгота"
}

{
  "categories": [
    "Adverbes en vieux slave",
    "Dérivations en russe",
    "Mots en russe suffixés avec -ота",
    "vieux slave"
  ],
  "derived": [
    {
      "lang": "Polonais",
      "lang_code": "pl",
      "word": "lgota"
    },
    {
      "lang": "Russe",
      "lang_code": "ru",
      "word": "льгота"
    },
    {
      "lang": "Slovaque",
      "lang_code": "sk",
      "word": "lehota"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "lhůta"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "Lhota"
    }
  ],
  "etymology_texts": [
    "Dérivé de льгъкъ, lĭgŭkŭ (« léger »), avec le suffixe -ота, -ota."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "adv",
  "pos_title": "Adverbe",
  "raw_tags": [
    "lĭgota"
  ],
  "senses": [
    {
      "glosses": [
        "Légèreté."
      ]
    }
  ],
  "word": "льгота"
}