Definition: In mathematics, a gudgeon is a type of geometric figure that resembles a gudgeon, which is a cylindrical or conical shape with flat sides and a rounded base. The word "gudgeon" comes from the Greek words "geuse" (meaning "cylinder") and "gon" (meaning "shape"). It is often used to refer to a cylindrical or conical object that has a flat top and a rounded base, such as a gudang in Indonesian cuisine