"Jerga" o "argot" is correct. :)

Hi Tom! There is not a single word to say "slang". I can try a definition for this word in Spanish: Forma de hablar propia de un grupo de personas que comparten ciertos intereses... (Yes, you need all these words in Spanish just to say "slang"). C U!

- Casual - Coloquial

Slang = Jerga, argot.

Hi, Well Tom, tries to write "slang" in any contexto, is the away to know how say that!!