Definition & Meaning of "backrest"

What is a "backrest"?

A backrest is the part of a chair, sofa, or other seating furniture that supports the back of a person sitting in it. It is typically padded or upholstered for comfort and can vary in height and design depending on the piece of furniture. The backrest helps provide support to the spine and promotes good posture while sitting. It can be straight or curved, and may include additional features like adjustable angles or built-in cushioning.