What does "nightlife" mean?

Nocturnal activities, especially visiting nightclubs.

Nightlife

Common synonyms include: clubbing, evening economy, evening recreation, night life, nightclubbing, nightlife governance.

/ˈnaɪtˌlaɪf/ noun

noun ·Rare ·Advanced level

Noun

1
Nocturnal activities, especially visiting nightclubs. countable, uncountable
"Rio de Janeiro boasts the best nightlife in South America."
2
the activity of people seeking nighttime diversion (as at the theater, a nightclub, etc.) wordnet
3
the entertainment available to people seeking nighttime diversion wordnet

"A businesswoman by day, Natasja leads a nightlife unfit for print."

From night + life.