"seal off" meaning in English

{
  "forms": [
    {
      "form": "seals off",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sealing off",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sealed off",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sealed off",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "seal off (third-person singular simple present seals off, present participle sealing off, simple past and past participle sealed off)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs with particle (off)",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Police sealed off the building following an anonymous bomb warning.",
          "type": "example"
        },
        {
          "ref": "December 15 2022, Samanth Subramanian, “Dismantling Sellafield: the epic task of shutting down a nuclear site”, in The Guardian",
          "text": "More dangerous still are the 20 tonnes of melted fuel inside a reactor that caught fire in 1957 and has been sealed off and left alone ever since.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To physically isolate an area or building for security reasons preventing passage of humans or vehicles."
      ],
      "id": "en-seal_off-en-verb-S2M9Yb3O",
      "links": [
        [
          "physically",
          "physically"
        ],
        [
          "isolate",
          "isolate"
        ]
      ],
      "raw_glosses": [
        "(transitive) To physically isolate an area or building for security reasons preventing passage of humans or vehicles."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "seal off"
}

{
  "forms": [
    {
      "form": "seals off",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "sealing off",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "sealed off",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "sealed off",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "*"
      },
      "expansion": "seal off (third-person singular simple present seals off, present participle sealing off, simple past and past participle sealed off)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs with particle (off)",
        "English terms with quotations",
        "English terms with usage examples",
        "English transitive verbs",
        "English verbs"
      ],
      "examples": [
        {
          "text": "Police sealed off the building following an anonymous bomb warning.",
          "type": "example"
        },
        {
          "ref": "December 15 2022, Samanth Subramanian, “Dismantling Sellafield: the epic task of shutting down a nuclear site”, in The Guardian",
          "text": "More dangerous still are the 20 tonnes of melted fuel inside a reactor that caught fire in 1957 and has been sealed off and left alone ever since.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To physically isolate an area or building for security reasons preventing passage of humans or vehicles."
      ],
      "links": [
        [
          "physically",
          "physically"
        ],
        [
          "isolate",
          "isolate"
        ]
      ],
      "raw_glosses": [
        "(transitive) To physically isolate an area or building for security reasons preventing passage of humans or vehicles."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "seal off"
}