This is the 8775th most frequent French word.
bidon
"Bidon" in English means "can," "container," or "drum," and can also mean "phony" or "bogus" informally.
Here, 'bidon' refers to a practical container used for holding liquids.
J'ai rempli le bidon d'eau pour le camping.
I filled the can with water for camping.
In this sentence, 'bidon' is used metaphorically to signify something that's false or nonsensical.
Ce que tu dis est bidon, ça ne veut rien dire.
What you're saying is nonsense, it means nothing.
Here, 'bidon' is applied as an adjective to describe something that is not genuine or poorly functioning.