[Meaning] boasting/imposture. Aristophanes in Knights [writes]: "I delighted in threats, I laughed at smokey talk."
[That is] at big pretensions and big claims of success. From the previously mentioned nouns, from thundering and shaking up the earth and pushing down overhanging banks and using lightning; for of lightning bolts, some are descending [from sky to earth], but others are smokey -- those which destroy by burning -- and others are called vivid.[1]