"Brick" is an informal term for a cuboid.
Brick
See also
Canonical Brick, Cuboid, Euler Brick, Harmonic Brick, Zarankiewicz's ConjectureExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Brick." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Brick.html