knuckleballer

noun

knuck·​le·​ball·​er ˈnə-kəl-ˌbȯ-lər How to pronounce knuckleballer (audio)
plural knuckleballers
: a baseball pitcher who specializes in pitching knuckleballs
… interviewed Phil Niekro, a master knuckleballer now pitching for the Cleveland Indians.Scientific American, July 1987

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Cite this Entry

“Knuckleballer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/knuckleballer. Accessed 30 Dec. 2025.

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