köken: Inherited from Vulgar Latin tuscus (literally “Etruscan, Tuscan”), from Vicus Tuscus (“Etruscan neighbourhood”), the Etruscan quarter of Rome, whose dwellers had a reputation of being poor and unruly. See Vicus Tuscus.
Possibly Borrowed from Spanish tosco, ultimately from Vulgar Latin tuscus (literally “Etruscan, Tuscan”). Possibly conflated with tostu (otherwise this latter is a doublet). Cf. for more costa~cosca, jittari~jiccari, taḍḍarita~taḍḍarica.