Where does “jack o'lantern” come from?

jack o'lantern (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.

jack o'lantern (English): will o' the wisp, a strange light that attracts...

Definitions

  1. will o' the wisp, a strange light that attracts...

Ancestry of “jack o'lantern”, step by step

jack o'lantern 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 o'

StepLanguageWordMeaning
1Englisho'Contraction of of; Contraction of on
2Middle EnglishO
3Old Englishoever, always
4LatinoThe name of the letter "O"; o!; oh!
5Etruscan𐌏
6Ancient GreekοLower-case omicron (ὂ μικρόν), the 15th letter of the ancient Greek alphabet. It represented the close-mid back rounded vowel. It is preceded by ξ and followed by π
7Phoenician𐤏ayin; ʿayin
8Egyptian𓁹
Every word from Hebrew עָקֵבEvery word from Hebrew יַעֲקֹבEvery word from Ancient Greek Ἰακώβ