What does vault door mean?
vault door
Plural: vault doors
Definition
A heavily reinforced entrance closure protecting a secure room, with a mechanism that drives locking bars into its surrounding frame.
Example sentences
That vault door won't budge; could you check whether the bolts are still engaged?
That vault door won't budge; could you check whether the bolts are still engaged?
After the technician serviced the vault door, we could finally turn the wheel without a struggle.
After the technician serviced the vault door, we could finally turn the wheel without a struggle.