soupbone

American  

[soop-bohn] / ˈsupˌboʊn /

noun

1. a bone used for making soup or broth.

2. Baseball Slang. a pitcher's throwing arm.

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Etymology

Origin of soupbone

First recorded in 1910–15; soup + bone

Example Sentences

No, the operation is not always successful, but on the other hand, some pitchers actually return with a rejiggered soupbone that can hurl a baseball even faster than what God had wrought.

From Washington Post

The arm, Passan shows us, just ain’t what it used to be back when pitchers regularly unlimbered what was called their soupbone every fourth day with the expectation that they would twirl complete games all season long.

From Washington Post