centerpunch noun 2verb 2forms 3 noun2 •A hand tool used to prepare a workpiece prior to drilling a hole. It typically compresses and then suddenly releases a spring, creating a small indentation that, in turn, guides and centers the drill. •The indentation left by such a tool. verb2 •To prepare a workpiece for drilling by using a centerpunch to create an indentation. •To place something directly in the middle. formscenterpunched · centerpunching · centerpunches