Where does “taillight” come from?

taillight (English) comes from English Light, from Middle English light, from Old English lēoht, from Proto-West Germanic leuht, from Proto-Germanic leuhtą, from Proto-Indo-European lewktom, from Proto-Indo-European lewk- — bright; to shine; to see.

taillight (English): One of a pair of red lights mounted on the rear...

Definitions

  1. One of a pair of red lights mounted on the rear...

Ancestry of “taillight”, step by step

taillight traces back through two separate lines of ancestry.

via English Light

StepLanguageWordMeaning
1EnglishLightA place name
2Middle EnglishlightThe radiation which allows for vision by...
3Old Englishlēohtluminous, bright, light, clear, resplendent,...
4Proto-West Germanicleuhtlight, bright; light
5Proto-Germanicleuhtąlight
6Proto-Indo-Europeanlewktom
7Proto-Indo-Europeanlewk-bright; to shine; to see

via English Tail

StepLanguageWordMeaning
1EnglishTailA Chinese constellation coinciding with the tail of Scorpius, one of the 28 lunar mansions and the tail of Azure Dragon
2Middle EnglishtaylA tail; The back side or reverse of a creature; A...
3Old Englishtæġltail
4Proto-Germanictagląhair; ponytail; hair of a tail; tail
5Proto-Indo-Europeandoḱ-hair of the tail
6Proto-Indo-Europeandeḱ-take; perceive
Every word from Proto-Indo-European lewk-