אֵשׁ

From LSJ

ἀεί ποτ' εὖ μὲν ἀσκός εὖ δὲ θύλακος ἅνθρωπός ἐστι → this guy's always good at being a wineskin, and at times a winesack

Source

English (Strong)

a primitive word; fire (literally or figuratively): burning, fiery, fire, flaming, hot.