What does "canalla" mean?

[amayo]

I was speaking with my friend and he called his boss "canalla". Does anyone know what that means?

[santiagop]

Canalla means scoundrel.

In Argentina the supporters of the soccer team Rosario Central are also called as Canallas.

[ivanm]

The description would be:

That is despicable by his vile behavior, also can be said that is bad, evil.

And how would say here you have to bank it.

[Maximiliano]

Yes, and riffraff can be another translation.

[ivanm]

Riffraff?? I don't know the term, is an urban term??