seal up
Intermediate (B1)neutral
To close something so tightly that nothing can get in or out
"She sealed up the envelope and left it on his desk."
Hear it in context
The Wild Story of the Teton Dam Failure
Practical Engineering · 5:54
to try and seal up the porous rock with grout.
Home Inspector Answers House Safety Questions | Tech Support | WIRED
WIRED · 9:45
I would seal up the floor and call in professional
My Dad Can't Stop My Secret Sleepover
Jordan Matter · 11:38
While you're in there, before we seal up this wall,
The Unsolved Mystery of Impact Flashes - Smarter Every Day 307
SmarterEveryDay · 39:06
I'm going to seal up all the Argon leak holes.
Here's What a Professional Workshop Did to This Old Mercedes E55 AMG
M539 Restorations · 53:52
up against the cover or the seal up against the crank.