1. centerpunch - Noun
2. centerpunch - Verb
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.
To prepare a workpiece for drilling by using a centerpunch to create an indentation.
To place something directly in the middle.
Source: en.wiktionary.org