The word "倒钩" is formed by combining the character "倒", which conveys inversion or reversal, with the character "钩", which means hook, resulting in a literal meaning of a reversed or backward-pointing hook. This compound term specifically describes a physical hook that curves in the opposite direction, such as a barb on a fishing hook or a tactical move in soccer where the leg hooks backward to strike the ball. The meaning arises directly from the sequential contribution of each character's definition.