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Definition of Centerpunch
1. Noun. 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. ¹
2. Noun. The indentation left by such a tool. ¹
3. Verb. To prepare a workpiece for drilling by using a centerpunch to create an indentation. ¹
4. Verb. To place something directly in the middle. ¹
¹ Source: wiktionary.com