welch plug

noun

Definition of welch plug

: a plug for sealing an unused end of an oil passage drilled through a hollow crankshaft, crank arm, or crankpin

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History and Etymology for welch plug

probably from the name Welch

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Cite this Entry

“Welch plug.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/welch%20plug. Accessed 10 Jul. 2020.

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