vertīgo, ĭnis, f. [verto], a turning or whirling round (perh. not ante-Aug.). I. Transf., a whirling of the head, giddiness, dizziness, vertigo, Liv. 44, 6, 8; Plin. 20, 15, 57, 161; 20, 17, 73, 194; 25, 9, 70, 117; 25, 11, 89, 139 al.; Macr. S. 7, 9.—Of persons intoxicated, Juv. 6, 304.— II. Trop., a revolution, change, alteration: vertigine rerum Attoniti, Luc. 8, 16.