Definition of jack shaft in English:

jack shaft

Line breaks: jack shaft

noun

A small auxiliary or intermediate shaft in machinery.
More example sentences
  • The tip jack shaft comprises at least one group of contact links which are arranged in a comb-type manner on the wide side of the tip jack shaft.
  • Using Dave's lathe, we made a new coupler that would keyway inside our fulcrum and jack shafts. This removed much of our runout.

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Word of the day grammarian
Pronunciation: grəˈme(ə)rēən
noun
a person who studies and writes about grammar