👉 A cockled is an object that is made of a material with a flat surface and a rounded or concave shape. It is often used in woodworking, as it can be used to create small pieces for hand tools such as chisels or file bits. The term "cockled" comes from the fact that the surface of the piece is like a cockle, which is a type of shellfish with a flat, round body and a pointed or concave shape.