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3. make (one's) bones

make (one's) bones

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make (one's) bones

1. To kill someone in order to obtain membership in a criminal organization. Used in this way, the phrase is often associated with the Mafia. A: "Has Johnny Dukes made his bones yet?" B: "Not yet, he's still a low level guy."

2. To solidify one's reputation. He made his bones as a big city detective before joining our town's police force.

See also: bone, make