Where does “bloodshot” come from?

Bloodshot comes from English blood and shot, where blood derives from Old English blōþą through Proto-Germanic, ultimately from Proto-Indo-European bʰel- meaning to swell or flow.

bloodshot (English): reddened and inflamed because of congested blood...

Definitions

  1. reddened and inflamed because of congested blood...

Ancestry of “bloodshot”, step by step

bloodshot traces back through two separate lines of ancestry.

via English Blood

StepLanguageWordMeaning
1EnglishBloodA member of the Los Angeles gang The Bloods
2Middle Englishbloodblood
3Old Englishblōdblood
4Proto-West Germanicblōdblood
5Proto-Germanicblōþąblood
6Proto-Indo-Europeanbʰleh₃-bloom, flower
7Proto-Indo-Europeanbʰel-to sound; to speak, roar, bark; shiny, white; to...
8Proto-Indo-Europeanbʰōl-

via English shot

StepLanguageWordMeaning
1EnglishshotWorn out or broken; Woven from warp and weft...
2Middle EnglishschotA missile or projectile; a thrown or fired weapon
3Old EnglishScotshot, act of shooting
4Old Norseskot
5Proto-Germanicskutąshot
6Proto-Indo-European(s)kewd-to advance, push; to drive, propel
Every word from Proto-Indo-European bʰōl-Every word from Proto-Indo-European bʰel-Every word from Proto-Indo-European bʰleh₃-