rockshaft

noun
rock·​shaft | \ ˈräk-ˌshaft How to pronounce rockshaft (audio) \

Definition of rockshaft

: a shaft that oscillates on its journals instead of revolving

First Known Use of rockshaft

circa 1864, in the meaning defined above

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The first known use of rockshaft was circa 1864

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to wander slowly or to speak indistinctly

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