trifaucis
[CL], trifax, that has three throats.~fax, Cerberus tres fauces habensOsb. Glouc.Deriv.591; si Cerberus ore trifauci / in scopulos dodona tuos achonita refuditJ. Exon.BTI 283.
tri-faucis, gen. is (poët.) uit drie muilen (komend) [latratus].