A device for a piece of furniture that has a furniture part accommodated in a movable manner on a basic furniture structure, for the device defining a stop position of the furniture part, an including an adjustment unit having an adjustable stop part, which bounds a furniture-part closing movement executed during normal operation, wherein the stop part is deflected resiliently out of a starting position, and wherein the stop position is determined by the extent of deflection in a fixed deflecting position of the stop part.