I.hissing, whistling (poet.; occurring, on account of the metre, only in the form sibila; cf. 1. sibilus init.): “colla (colubrae),” Verg. G. 3, 421; id. A. 5, 277; cf. “ora (anguium),” id. ib. 2, 211: “coma torvae frontis (Panis),” Val. Fl. 3, 50.
sībĭlus , a, um, adj. 1. sibilus,