Brick in Definition 1 of 2Pro Tip 1/3Permanent Action Bricking in is considered a durable solution, making changes difficult to reverse. Once they bricked in the doorway, it was like it never existed. Pro Tip 2/3Literal Meaning Think of 'brick in' as physically adding bricks to make a solid wall. The old window was bricked in to prevent drafts. Pro Tip 3/3Spatial Change Using 'brick in' implies changing the use or function of a space. They bricked in the alcove to create a storage closet.