Einwurf (German) comes from German ein, from Middle High German ein, from Old High German ein, from Proto-West Germanic ain, from Proto-Germanic ainaz, from Proto-Indo-European óynos — one; single.
Einwurf (German): throw-in
Definitions
throw-in
Ancestry of “Einwurf”, step by step
Einwurf traces back through two separate lines of ancestry.