A dado is a type of joint that is known for its strength and functionality. This joint is often used when constructing bookshelves or cabinets, as it involves cutting a groove into a piece of wood and fitting a second piece into that groove, creating a snug and secure fit. This makes dado joints ideal for furniture or storage areas that will be supporting weight. In addition to this woodworking joint, the term “dado” may also refer to a horizontal rail that is installed along the bottom portion of a wall. This rail is often called a chair rail and is used to divide the design of the wall, separating different design elements in the room. It can also be used to prevent the wall from being damaged by furniture. Overall, dado joints and rails are functional and can be aesthetically pleasing additions to furniture and home design.