What does the word du vent mean in English mean?

"Du vent" in French literally translates to "of the wind." However, it's not a direct translation and has a more nuanced meaning in French. It's an idiom that essentially means:

* Nonsense: "That's all du vent" translates to "That's all nonsense".

* Lies: "He's telling you du vent" means "He's lying to you."

* Hot air: Similar to "nonsense" or "empty promises".

So, while "of the wind" might seem like a literal translation, it's actually a colloquialism used to express something unfounded or untrue.