Cer"be*rus (?), n. [L. Cerberus (in sense 1), gr. .]
1. Class. Myth.
A monster, in the shape, of a three-headed dog, guarding the entrance into the infernal regions, Hence: Any vigilant custodian or guardian, esp. if surly.
2. Zool.
A genus of East Indian serpents, allied to the pythons; the bokadam.
© Webster 1913.