The etymology of Jack-o’-Lantern and the confused history of Hallowe’en. And you can find more spooky etymologies in our video on Ghost Words: https://youtu.be/Td5FtoKWWTI
For further explorations of these subjects, check out Thorneloe University's courses in the Humanities, including "Greek and Latin Roots of English" and other Ancient Studies courses, online and on campus in Sudbury, Ontario. http://www.thorneloe.ca/endlessknot