Definition
A "racker" can refer to a few different things, depending on the context. In a billiards or pool hall, a racker is the person who arranges the balls into the triangle shape before a game. In a bowling alley, it might refer to a machine that sets up the pins. Historically, it could also refer to someone who uses a rack to stretch cloth. The meaning varies based on the environment. Think of it like a stagehand in a theater, fulfilling an unseen but essential task.