Where does “threadlocker” come from?

threadlocker (English) comes from English locker, from English Lock, from Middle English lok, from Old English lāc, from Proto-West Germanic laik, from Proto-Germanic laikaz, from Proto-Indo-European leyǵ- — to bind, tie.

Ancestry of “threadlocker”, step by step

threadlocker traces back through two separate lines of ancestry.

via English locker

StepLanguageWordMeaning
1EnglishlockerA type of storage compartment with a lock,...
2EnglishLockfrom the surname
3Middle Englishloklock
4Old Englishlācplay, sport, strife, battle, sacrifice, offering,...
5Proto-West Germaniclaikgame, sport
6Proto-Germaniclaikazdance; game, sport; hymn
7Proto-Indo-Europeanleyǵ-to bind, tie

via English thread

StepLanguageWordMeaning
1EnglishthreadA long, thin and flexible form of material,...
2Middle Englishþredthread (of twine or fibre)
3Old Englishþrǣd
4Proto-Germanicþrēduzthread, twisted fibre
5Proto-Indo-Europeantreh₁-tu-
6Proto-Indo-Europeanterh₁-to rub, turn; to drill, pierce
Every word from Proto-Indo-European leyǵ-