Práctica is a term for an informal event where Argentine tango or Salsa is danced. It is similar to a Milonga. However while a Milonga is rather a formal event where dancers socialise, on a Práctica dancers focus on practicing the dance.
The music played is similar to the music played on milongas, though the flow of songs is not necessarily broken up by cortinas. Prácticas are often held on a regular basis (usually weekly).