rūga (noun F) :
* A crease in the face, a wrinkle.
* In gen. (class.; usu. in plur.).
* Plur.: non cani non rugae repente auctoritatem arripere possunt,Cic. Sen. 18, 62: vos populumque Romanum non consilio neque eloquentiā, sed rugis supercilioque decepit,id. Red. in Sen. 7, 15: nec pietas moram Rugis et instanti senectae Afferet, Hor. C. 2, 14, 3: vis tu remittere aliquid ex rugis,Plin. Ep. 9, 17, 2: rugas in fronte contrahere,Varr. R. R. 1, 2, 26: rugis vetus Frontem senectus exaret,Hor. Epod. 8, 4; cf.: frontem rugis arat, * Verg. A. 7, 417: dum tarda senectus inducat rugas,Tib. 2, 2, 20; Hor. C. 4, 13, 11: sulcare cutem rugis,Ov. M. 3, 276; 14, 96; 15, 232 et saep. al.— Prov.: de rugis crimina multa cadunt,Ov. Am. 1, 8, 46.
* Transf., a crease, fold, plait, wrinkle, corrugation, etc., of any kind (post-Aug.; cf. rugo, I.): margaritae flavescunt senectā rugisque torpescunt,Plin. 9, 35, 54, § 109: aquilonis afflatus poma deturpans rugis,id. 15, 16, 18, § 59; 12, 7, 14, § 26; 17, 14, 24, § 107 al.; of the folds of garments, id. 35, 8, 34, § 56; Macr. S. 2, 9.—In sing.: jam deciens redit in rugam,Pers. 6, 79 Gildersleeve ad loc.: vestes quoque diutius vinctas ruga consumet,Petr. 102, 12.
* The female screw, Plin. 18, 31, 74, § 317.