I.the name of a Roman gens. So,
1. Otacilius Crassus, an adherent of Pompey, Caes. B. C. 3, 28 sq.—
2. T. Otacilius, a proprœtor, Liv. 22, 56.—In fem.: “OTACILIA,” Inscr. Grut. 29, 2; Eckh. D. N. 7, p. 332.—Hence,
II. OTACILIANA VILLA, of an Otacilius, Inscr. Marin. Fratr. Arv. p. 577.