seal off


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Related to seal off: sealable

seal off

Also, seal up. Close tightly or barricade to prevent entry or exit. For example, We're sealing off the unused wing of the building, or The jar is tightly sealed up. Dating from the first half of the 1900s, this idiom uses seal in the sense of "close securely," as one used to do with a seal of wax.
See also: off, seal

seal off

v.
1. To close tightly or surround something or someplace with a barricade or cordon: The government has sealed off its borders. The police surrounded the building and sealed it off.
2. To isolate someone or something: The remote location sealed the village off from the rest of the world.
See also: off, seal
References in periodicals archive ?
Detective chief inspector Lol Carr said: ``With that type of information we had no choice but to seal off Stanley Park.
People living in Cockshott Drive said contractors arrived this morning to board up the garden and also seal off a field behind the row of ex-prison officer houses in the cul-de-sac.
Released at the trouble site, the coils fill the bulge and trigger formation of blood clots, which seal off the aneurysm.
Reports that a man strode into a 12-story office building with a rifle and disappeared into an elevator forced police on Wednesday to evacuate nearly 500 employees and seal off one of the busiest blocks in the city's core.
Following unsuccessful attempts at shutting off the water influx with successive cement squeezes, Corridor plans to run and cement a 4-1/2" casing liner to seal off the water zone before penetrating the oil-prospective Black River formation.
FIREFIGHTERS seal off a town yesterday amid fears gas cylinders could explode.
Police seal off busy street after report of shots fired at car
But this is very expensive and we can't seal off the rivers completely.