Definition of wall up phrasal verb from the Oxford Advanced Learner's Dictionary


wall up

 phrasal verb
phrasal verb
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Phrasal Verbs
[usually passive] to keep somebody as a prisoner behind walls
[usually passive] to fill an opening with a wall, bricks, etc. so that you can no longer use it I could see where the doorway had been walled up.
See the Oxford Advanced American Dictionary entry: wall up