"nihil obstat" meaning in Latin

{
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase",
        "head": "nihil obstat"
      },
      "expansion": "nihil obstat",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Latin entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "la",
          "name": "Roman Catholicism",
          "orig": "la:Roman Catholicism",
          "parents": [
            "Catholicism",
            "Christianity",
            "Abrahamism",
            "Religion",
            "Culture",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "This book has been found not to have breached religious or moral norms."
      ],
      "id": "en-nihil_obstat-la-phrase-jepm21eQ",
      "links": [
        [
          "Roman Catholicism",
          "Roman Catholicism"
        ]
      ],
      "raw_glosses": [
        "(Roman Catholicism) This book has been found not to have breached religious or moral norms."
      ],
      "topics": [
        "Catholicism",
        "Christianity",
        "Roman-Catholicism"
      ]
    }
  ],
  "word": "nihil obstat"
}

{
  "head_templates": [
    {
      "args": {
        "1": "la",
        "2": "phrase",
        "head": "nihil obstat"
      },
      "expansion": "nihil obstat",
      "name": "head"
    }
  ],
  "lang": "Latin",
  "lang_code": "la",
  "pos": "phrase",
  "senses": [
    {
      "categories": [
        "Latin entries with incorrect language header",
        "Latin lemmas",
        "Latin multiword terms",
        "Latin phrases",
        "Latin terms with redundant head parameter",
        "la:Roman Catholicism"
      ],
      "glosses": [
        "This book has been found not to have breached religious or moral norms."
      ],
      "links": [
        [
          "Roman Catholicism",
          "Roman Catholicism"
        ]
      ],
      "raw_glosses": [
        "(Roman Catholicism) This book has been found not to have breached religious or moral norms."
      ],
      "topics": [
        "Catholicism",
        "Christianity",
        "Roman-Catholicism"
      ]
    }
  ],
  "word": "nihil obstat"
}