psythius
From LSJ
τῶν Λειβηθρίων ἀμουσότερος → more uncultured than Leibethrans, more uncultured than the people of Leibethra, lowest degree of mental cultivation
Latin > English (Lewis & Short)
psythĭus: or psĭthĭus, a, um, adj., = ψύθιος (ψιθ-),
I psythian, a designation of a species of vine: vitis, Verg. G. 4, 269; Col. 3, 2, 24.—Called also simply psythĭa, ae, f., Verg. G. 2, 93; and in plur.: psythiae (sc. uvae), Stat. S. 4, 9, 38.—Neutr. subst.: psythĭum, ii, a kind of raisin - wine, Plin. 14, 9, 11, § 80.
