Where does “fire-breathing” come from?

fire-breathing (English) comes from English fire, from Middle English fier, from Old English fȳr, from Old English feor, from Proto-Germanic ferrai, from Proto-Indo-European per-nóy, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

fire-breathing (English): That shoots fire from the mouth or nostrils;...

Definitions

  1. That shoots fire from the mouth or nostrils;...

Ancestry of “fire-breathing”, step by step

fire-breathing traces back through two separate lines of ancestry.

via English fire

StepLanguageWordMeaning
1EnglishfireA chemical reaction involving the bonding of...
2Middle EnglishfierAlternative form of figer
3Old Englishfȳrfire
4Old EnglishfeorAlternative form of feorr; far
5Proto-Germanicferraifar, distant
6Proto-Indo-Europeanper-nóy
7Proto-Indo-Europeanper-before, in front; first; to go through
8Proto-Indo-Europeanpr̥tóspassed , crossed

via English breathing

StepLanguageWordMeaning
1Englishbreathingpresent participle of breathe; The act of...
2EnglishbreatheTo draw air into (inhale), and expel air from (exhale), the lungs in order to extract oxygen and excrete waste gases
3Middle Englishbrethento breathe, blow, exhale, odour
4Middle Englishbrethbreath
5Old Englishbrǣþodor, scent, stink, exhalation, vapor
6Proto-Germanicbrēþizvapour; steam; breath; odour, smell
7Proto-Indo-Europeanbʰrē-t-exhalation from heat; steam
8Proto-Indo-Europeanbʰer-to bear, carry
Every word from Proto-Indo-European pr̥tósEvery word from Proto-Indo-European per-Every word from Proto-Indo-European per-nóy