I.v. inch. n. (occurring only in the perf.), to become stiff or rigid; to curdle (a poet. word): “formidine sanguis deriguit,” Verg. A. 3, 260: “deriguere oculi,” were fixed, id. ib. 7, 447; so, “oculi,” Ov. M. 14, 754: “hirsutae comae,” id. F. 3, 332: “manus,” Luc. 3, 613: “cervix,” Ov. M. 5, 233: “Niobe malis,” id. ib. 6, 303 (al. diriguit).
dē-rĭgesco , gŭi, 3,