sībilus ī, m plur. sībilī, ōrum, m, poet. also sībila, ōrum, n SIB-, a hissing, whistling: sibilo dare signum, L.: clamor tonitruum et rudentum sibilus: venientis sibilus austri, V.: serpens horrenda sibila misit, O.: Sibila dant, O.

—A contemptuous hissing, hissing at, hissing off: sibilum metuis?: ei sibilum mortem videri necesse est: e scaenā sibilis explodebatur: (eum) equi repentinis sibilis extimescebant.