Unknown: * Perhaps as if tosta, from torreō (“to burn, parch”). * Perhaps from Proto-Indo-European *tₔtḱ-t-, from *tetḱ- (“to create, produce”) (whence Latin texō (“to weave”)), and thus cognate with Middle Persian tšt' (tašt). This is considered unlikely by de Vaan for semantic reasons. * Borrowed from a substrate language, as words for vessels often are.