Liddell-Scott-Jones

κεραυνός (keraunos) a thunderbolt ^G:N-M

κεραυνός, ὁ,

thunderbolt, νῆα θοὴν ἔβαλε ψολόεντι κ. [Refs 8th c.BC+]; βρόντησε καὶ ἔμβαλε νηῒκ[Refs]; especially as weapon of Zeus, [Refs 8th c.BC+]; forged by the Cyclopes,[Refs 5th c.BC+]; πυρωπός[Refs 5th c.BC+]; πτερόεις[Refs 5th c.BC+]; κ. πίπτει, κατασκήπτει εἰς.., [Refs 5th c.BC+] thunderbolts, [Refs 8th c.BC+]; ποῦ ποτε κεραυνοὶ Διό; [Refs 5th c.BC+]; defined as ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς, i.e. thunder and lightning, [Refs 4th c.BC+]

__II metaphorically, κεραυνὸν ἐν γλώττῃ φέρειν, of Pericles, [Refs]; τύπτειν κεραυνός a thunderbolt for striking, [Refs 4th c.BC+]; Κεραυνός, as a name of great soldiers, [Refs 1st c.AD+]
__III title of Zeus, [Refs 5th c.BC+]