Seal off definitions

Seal off

1) Blockade 2) Hermetically contain 3) Isolate securely 4) Prevent exit or entry 5) Surround with a barricade
Found on https://www.crosswordclues.com/clue/seal-off

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seal off

verb make tight; secure against leakage; `seal the windows`
Found on https://www.encyclo.co.uk/local/20974

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