Where does “eckel” come from?

eckel (Middle High German) comes from Old High German ehhol, from Latin aciāle, from Latin aciēs, from Latin aceō, from Proto-Italic akēō, from Proto-Indo-European h₂eḱ-éh₁-ye-ti, from Proto-Indo-European h₂eḱ- — sharp.

Ancestry of “eckel”, step by step

Step	Language	Word	Meaning
1	Old High German	ehhol	steel
2	Latin	aciāle	steel
3	Latin	aciēs	sharp edge or point
4	Latin	aceō	to be sour
5	Proto-Italic	akēō	be sharp-tasting, be sour
6	Proto-Indo-European	h₂eḱ-éh₁-ye-ti	—
7	Proto-Indo-European	h₂eḱ-	sharp

Every word from Proto-Indo-European h₂eḱ- →