
Brick up
Literal Usage
Used when physically blocking an opening with bricks, not metaphorically.

They bricked up the fireplace to prevent drafts.
Permanent Action
Suggests a permanent or long-term closure, not easily reversible.

The city bricked up the old tunnel entrance.
Security Measure
Often done for security reasons, to prevent entry or passage.

To increase safety, they bricked up the backdoor.
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