What does exferra mean in Latin?

exferra, a noun, means “exhausted horseshoe, the old horseshoe after it is removed from the hoof of a horse; an old rusty knife without handle”.

noun · feminine

exferra

*exferra f (plural *exferrās)

femininereconstructionexhausted horseshoe, the old horseshoe after it is removed from the hoof of a horse
femininereconstructionan old rusty knife without handle

Deverbal of *exferrāre (“to unshoe (a horse)”), from ex- + ferrum (“iron, (Proto-Romance) *horseshoe”) + -āre.

Italo-Romance

What does exferra mean in Latin?: exferra, a noun, means “exhausted horseshoe, the old horseshoe after it is removed from the hoof of a horse; an old rusty knife without handle”.