Faujas (en. Faujas)
/foʒa/
Slang Meanings
A colloquial term for small gravels.
It looks like faujas, but it's finer.
Ça ressemble à du faujas, mais c'est plus fin.
Using the word in a humorous context.
One could say that your theory is as solid as a faujas!
On pourrait dire que ta théorie est aussi solide qu'un faujas!