Where does “jackshaft” come from?

jackshaft (English) comes from English Jack, from Middle English jakke, from Anglo-Norman jacke, from Middle French jaque, from Middle French jacques, from French jacques, from Latin Iacobus, from Ancient Greek Ἰάκωβος — heel of the foot; heel.

jackshaft (English): A common mechanical component used to transfer or...

Definitions

  1. A common mechanical component used to transfer or...

Ancestry of “jackshaft”, step by step

jackshaft traces back through two separate lines of ancestry.

via English Jack

StepLanguageWordMeaning
1EnglishJackA placeholder or conventional name for any man,...
2Middle EnglishjakkeA padded coat, especially as light armour
3Anglo-Normanjacke
4Middle Frenchjaque
5Middle Frenchjacques
6Frenchjacquesplural of jacque; a stupid person; a jemmy or...
7LatinIacobusJacob; James; Saint James
8Ancient GreekἸάκωβος
9Ancient GreekἸακώβJacob
10HebrewיַעֲקֹבJacob
11Hebrewעָקֵבheel of the foot; heel

via English shaft

StepLanguageWordMeaning
1EnglishshaftThe entire body of a long weapon, such as an...
2Old Englishsċeaftshaft; creation
3Old Englishsċieppanto form; shape
4Proto-West Germanicskappjanto make, to create
5Proto-Germanicskapjanąto make, to create; to shape
6Proto-Indo-Europeanskab-to cut, split, hew, shape; to cut, split, carve,...
Every word from Hebrew עָקֵבEvery word from Hebrew יַעֲקֹבEvery word from Ancient Greek Ἰακώβ