What does vais mean in Spanish?

"Vais" is the second-person plural form of the verb "ir" (to go) in Spanish. It means "you all go" or "you (plural) go."

Here are some examples:

* ¿A dónde vais? (Where are you all going?)

* Vais a la playa, ¿verdad? (You're all going to the beach, right?)

* Vais a llegar tarde. (You're all going to be late.)

It's important to note that "vais" is only used with the formal "ustedes" (you all, formal) and not the informal "vosotros" (you all, informal). In most of Latin America, "vosotros" and its verb forms are not used, so "vais" is the only option.