- Used other than as an idiom: see brick, wall.
- A wall made of bricks.
- (figuratively) An obstacle.
- The investigators came up against a brick wall in their search for the missing money when they discovered it had been transferred overseas.
- (figuratively) Someone who is silent or unresponsive.
- National Thespian Dramatic Honor Society for High Schools (1987) Dramatics, volume 59, page 23: “When mama says she doesn't talk, she means it. She's a brick wall.”
- Judith Caseley (1992) My Father, The Nutcase, page 34: “"Does he talk much? I mean, does he initiate conversation?"
"No. He's a brick wall," I said.”
- Edward R.F. Sheeran (1997) Cardinal Galsworthy, page 182: “Having uttered these benign assurances, Mr Burner III became a brick wall.”