κεραυνὸν ἐν γλώττῃ φέρειν → carry a thunderbolt on his tongue
sprout: P. and V. πτορθός (Plato), V. βλάστημα, τό (rare P.), βλαστή, ἡ (rare P.).
P. and V. βλαστάνειν (rare P.), V. κληματοῦσθαι (Soph., Fragment).
