rictus, ūs, m. (collat, form rictum, i, n., Lucr. 6, 1195; Cic. Verr. 2, 4, 43, § 94; plur. ricta, Lucr. 5, 1064; cf. Non. 221, 18 sq.) [ringor],
I the aperture of the mouth , the mouth wide open (esp. for laughing; class.; cf. hiatus): rictus parvissimus, Varr. ap. Non. 456, 9; Lucil. Titin. and Pompon. ib.; Lucr. 6, 1195; Cic. l. l.; Quint. 1, 11, 9; Suet. Claud. 30; Flor. 3, 11 fin. ; Hor. S. 1, 10, 7; Juv. 10, 230 al.— Plur. , Ov. A. A. 3, 283; id. M. 11, 126.—Of animals, gaping , distended jaws , Ov. M. 1, 741; 2, 481; Juv. 10, 272.— Plur. , Lucr. 5, 1064; Ov. M. 3, 674; 4, 97; 6, 378; 11, 59; 14, 65 et saep.—
2 Poet., transf., the opening of the eyes , Luc. 6, 757 Cort.; Sen. Herc. Oet. 1168; 1276.