"листопадъ" meaning in Vieux slave

{
  "categories": [
    {
      "kind": "other",
      "name": "Calendrier en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Compositions en russe",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en vieux slave",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Vieux slave",
      "orig": "vieux slave",
      "parents": [],
      "source": "w"
    }
  ],
  "derived": [
    {
      "lang": "Biélorusse",
      "lang_code": "be",
      "word": "лістапад"
    },
    {
      "lang": "Bulgare",
      "lang_code": "bg",
      "word": "листопад"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "listopad"
    },
    {
      "lang": "Ukrainien",
      "lang_code": "uk",
      "word": "листопад"
    }
  ],
  "etymology_texts": [
    "Composé de листъ, listŭ (« feuille ») et de падати, padati (« tomber »), littéralement « mois de la chute des feuilles »."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Octobre."
      ],
      "id": "fr-листопадъ-cu-noun-2jLoVmG1"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "листопадъ"
}

{
  "categories": [
    "Calendrier en vieux slave",
    "Compositions en russe",
    "Noms communs en vieux slave",
    "vieux slave"
  ],
  "derived": [
    {
      "lang": "Biélorusse",
      "lang_code": "be",
      "word": "лістапад"
    },
    {
      "lang": "Bulgare",
      "lang_code": "bg",
      "word": "листопад"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "listopad"
    },
    {
      "lang": "Ukrainien",
      "lang_code": "uk",
      "word": "листопад"
    }
  ],
  "etymology_texts": [
    "Composé de листъ, listŭ (« feuille ») et de падати, padati (« tomber »), littéralement « mois de la chute des feuilles »."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Octobre."
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "листопадъ"
}