Where does “eggjárn” come from?

eggjárn (Icelandic) comes from Icelandic járn, from Old Norse járn, from Proto-Germanic īsarną, from Proto-Celtic īsarnom, from Proto-Indo-European h₁ésh₂r̥ — blood.

eggjárn (Icelandic): any tool or implement with a sharp edge (e.g. knife, scissors)

Definitions

  1. any tool or implement with a sharp edge (e.g. knife, scissors)

Ancestry of “eggjárn”, step by step

eggjárn traces back through two separate lines of ancestry.

via Icelandic járn

StepLanguageWordMeaning
1Icelandicjárniron
2Old Norsejárniron
3Proto-Germanicīsarnąiron
4Proto-Celticīsarnomiron
5Proto-Indo-Europeanh₁ésh₂r̥blood

via Icelandic egg

StepLanguageWordMeaning
1Icelandiceggan egg; an oval shaped object; the ovum
2Old Norseeggegg; edge
3Proto-Germanicagjōedge, corner
4Proto-Indo-Europeanh₂eḱ-sharp
Every word from Proto-Indo-European h₁ésh₂r̥ →Every word from Proto-Celtic īsarnom →Every word from Proto-Germanic īsarną →