Did you know that? The origin of the wink

Did you know that? Originally, the wink did not have the same meaning as today in our western world***.

Yes, today the wink is known by all as a sign of seduction, of connivance between 2 people. It can also be, in a more abstract way, an implicit reference that an author makes to his reader to create a certain complicity.

But did you know that the wink was originally used as a sign of recognition between insiders?

So...

*** Indeed, you have to know that in other cultures, the wink does not have the same (cool) meaning as for us...