βροντησικέραυνος
From LSJ
οὐκ ἐν τῷ πολλῷ τὸ εὖ, ἀλλ' ἐν τῷ εὖ τὸ πολύ → good is not found in plenty but plenty in good, quality matters more than quantity
English (LSJ)
ον,
A sending thunder and lightning, Νεφέλαι Ar.Nu.265 (anap.).
Greek (Liddell-Scott)
βροντησικέραυνος: -ον, ὁ ἐκπέμπων βροντὴν καὶ ἀστραπὴν ἢ κεραυνόν, νεφέλη Ἀριστοφ. Νεφ. 265.