1
general::
Phrase(s): wall someone or something off
to separate or segregate someone or something by building a wall. • She sat right across from me at her desk, listening to every phone call I made. Finally, the manager walled her off so we now can carry on our business in privacy. • They walled off the south door to the building., Phrase(s): wall something off (from someone or something)
to deny access to an area by building a wall as a barrier. • The manager was told to wall the incinerator area off from the machinery area. • Please wall off the incinerator area.
McGrawhill's American Idioms And Phrasal Verbs