A "brick wall" is a solid structure made of bricks, typically used in construction for buildings, fences, or other architectural features. It provides strength and durability, often serving as a barrier or support. Brick walls can be found in various styles and colors, depending on the type of bricks used and the design preferences of the builder. In a metaphorical sense, a "brick wall" can refer to an obstacle or challenge that is difficult to overcome. This expression is often used in discussions about personal goals, such as in the context of sports or education, where individuals may feel stuck or unable to progress.