What does Lef Ou mean in french?

"Lef Ou" is not a valid French phrase or word. It's likely a misspelling or a combination of words that don't make sense together.

Could you please provide more context or check your spelling?

For example, maybe you meant:

* "Le fou" - which means "the fool"

* "L'œuf" - which means "the egg"

* "Le four" - which means "the oven"

Once you provide more information, I can help you understand the meaning!