Where does “two-edged” come from?

two-edged (English) comes from English two, from Middle English two, from Old English twā, from Old English twēġen, from Proto-West Germanic twai-, from Proto-Germanic twai, from Proto-Indo-European dwóh₁ — two.

two-edged (English): having two cutting edges; having two, often...

Definitions

  1. having two cutting edges; having two, often...

Ancestry of “two-edged”, step by step

two-edged traces back through two separate lines of ancestry.

via English two

StepLanguageWordMeaning
1EnglishtwoA numerical value equal to 2; this many dots;...
2Middle Englishtwotwo
3Old Englishtwātwo
4Old Englishtwēġentwo; twain
5Proto-West Germanictwai-two
6Proto-Germanictwaitwo
7Proto-Indo-Europeandwóh₁two

via English edged

StepLanguageWordMeaning
1Englishedgedsimple past tense and past participle of edge;...
2Middle EnglisheggedHaving an edge of a certain type; Having an edge;...
3Old Englishecged—
Every word from Proto-Indo-European dwóh₁ →Every word from Proto-Germanic twai →Every word from Proto-West Germanic twai- →