"кровъ" meaning in Vieux slave

{
  "categories": [
    {
      "kind": "other",
      "name": "Déverbaux en vieux slave",
      "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": "Slovène",
      "lang_code": "sl",
      "word": "krov"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "krov"
    }
  ],
  "etymology_texts": [
    "Déverbal de крыти (« couvrir »)."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Toit."
      ],
      "id": "fr-кровъ-cu-noun-N~qmUEkZ"
    },
    {
      "glosses": [
        "Tente, cabane, habitation."
      ],
      "id": "fr-кровъ-cu-noun-rjOthy-c"
    },
    {
      "glosses": [
        "Protection, lieu caché."
      ],
      "id": "fr-кровъ-cu-noun-mGmHiI1S"
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en vieux slave de la religion",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Sanctuaire."
      ],
      "id": "fr-кровъ-cu-noun-EXle3zG3",
      "topics": [
        "religion"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "покровъ"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "кровъ"
}

{
  "categories": [
    "Déverbaux en vieux slave",
    "Noms communs en vieux slave",
    "vieux slave"
  ],
  "derived": [
    {
      "lang": "Slovène",
      "lang_code": "sl",
      "word": "krov"
    },
    {
      "lang": "Tchèque",
      "lang_code": "cs",
      "word": "krov"
    }
  ],
  "etymology_texts": [
    "Déverbal de крыти (« couvrir »)."
  ],
  "lang": "Vieux slave",
  "lang_code": "cu",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Toit."
      ]
    },
    {
      "glosses": [
        "Tente, cabane, habitation."
      ]
    },
    {
      "glosses": [
        "Protection, lieu caché."
      ]
    },
    {
      "categories": [
        "Lexique en vieux slave de la religion"
      ],
      "glosses": [
        "Sanctuaire."
      ],
      "topics": [
        "religion"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "покровъ"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "кровъ"
}