Freud Joiner Biscuit is a type of woodworking accessory used to join two pieces of wood together. It is a small, oval-shaped piece of compressed wood, typically made from beech, that is inserted into slots cut into the edges of the two pieces of wood. The biscuit expands when it comes into contact with glue, creating a strong bond between the two pieces of wood. The Freud Joiner Biscuit is a popular choice among woodworkers due to its ease of use, versatility, and effectiveness in creating strong joints. It is named after the company that first introduced it, Freud, a manufacturer of woodworking tools and accessories.