pervĭgĭl

I. cura, App. M. 11, p. 270, 31), adj., ever watchful (poet. and in post-Aug. prose; cf. pernox): pervigil in mediae sidera noctis eras, Ov. Am. 1, 6, 44; id. M. 10, 369: pervigilem draconem, id. ib. 7, 149; id. H. 12, 60: pervigiles et insomnes, Plin. Pan. 63: canis, Sen. Herc. Fur. 809: custodia, Luc. 4, 7: torus, Juv. 15, 43: popinae, id. 8, 158.—

II. Transf.: nox, Just. 12, 13, 7.