Definition from Wiktionary, the free dictionary
- (informal) hi; what's up (a greeting)
- What's next? (asking what is the next step or the next thing that follows)
- Used other than as an idiom: see e, aí.
- (what's up?): fala aí
- (informal) then (soon afterward)
- Comi meu café, e aí saí de casa. - I ate my breakfast, then I left home.