Having walls made of brick.

simple past tense and past participle of wall up

(idiomatic) Wildly unconventional; bizarre; absurd. / (idiomatic) Of a person's behaviour: greatly inappropriate.

Alternative spelling of off-the-wall

(US, idiomatic, slang) With maximum effort or commitment.

(idiomatic) An ominous warning; a prediction of bad luck.

A restaurant, shop or other establishment catering to customers that is particularly inconspicuous and easily overlooked. / (colloquial, chiefly Britain) An automated teller machine (ATM).

(idiomatic) A very difficult situation with no beneficial options available for action.

a hand railing attached to a wall

(idiomatic) A quiet, non-participating, or unseen observer; an eavesdropper or witness.