From Latin cultellus, diminutive of culter (“knife, razor”).
cochiello m (plural cochiellos)
- knife
c. 1250, Alfonso X, Lapidario, f. 40v:[…] ⁊ ay dellas tan luengas. que fazen dellas mangos pora cochiellos.- […] and they can be so elongated that they make handles for knives out of them.