Definitions:

1. A conference or other gathering with prolonged talking. NOUN
   • These summits are merely empty gabfests.
2. An informal gathering for general talk or an extended conversation. NOUN
   • Three old friends stopped by and we had a real gabfest.

Synonyms:

• chat
• chatter
• chitchat
• clambake
• confab.
• flap
• parley