Verb
seal up (third-person singular simple present seals up, present participle sealing up, simple past and past participle sealed up)
to completely seal, enclose with a seal
seal up an envelope
Wilt thou seal up the avenues of ill Pay every debt as if God wrote the bill. Ralph Waldo Emerson
Here then, as I lay down the pen and proceed to seal up my confession, I bring the life of that unhappy Henry Jekyll to an end. Robert Louis Stevenson
After the books are dealt with, they seal up the room which contained the library, later telling Don Quixote that it was the action of a wizard (encantador). Source: Internet
In a suitport system, a rear-entry space suit is attached and sealed against the outside of a spacecraft, such that an astronaut can enter and seal up the suit, then go on EVA, without the need for an airlock or depressurizing the spacecraft cabin. Source: Internet
The ghost's loud and frightful groans caused the people of the town to seal up the doors of the building. Source: Internet