Where does “jackstay” come from?

jackstay (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.

jackstay (English): A stay (rope, bar or batten), running along a ship's yard, to which is attached the head of a square sail

Definitions

  1. A stay (rope, bar or batten), running along a ship's yard, to which is attached the head of a square sail

Ancestry of “jackstay”, step by step

jackstay 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 stay

StepLanguageWordMeaning
1EnglishstayTo prop; support; sustain; hold up; steady; To...
2Middle EnglishstayA stay
3Old Frenchestayeprop, support
4Middle Dutchstaeyea prop, stay
5Middle Dutchstaede
6Old Dutchstada site, place, location, standing
7Proto-Germanicstadizplace, location
8Proto-Indo-Europeanstéh₂tisstanding, position
9Proto-Indo-European*steh₂-
Every word from Hebrew עָקֵבEvery word from Hebrew יַעֲקֹבEvery word from Ancient Greek Ἰακώβ