κλειδουχέω
From LSJ
κεραυνὸν ἐν γλώττῃ φέρειν → carry a thunderbolt on his tongue
English (LSJ)
Att. κληδ-,
A to be a κλειδοῦχος, κ. θεᾶς to be her priestess, E.IT1463: abs., -οῦντος Ἀρίστωνος OGI170 (Delos, ii/i B.C.). II γλώσσης πικροῖς κέντροισι κλῃδουχούμενοι, perh. kept in check, E.HF 1288.