0 nonsense or boring and unnecessary information:
2 something written or said that is completely worthless; nonsense:
Why do we have to listen to him drivelling on about something he clearly knows nothing about?
Next time she starts drivelling in public about how "My family is THE most important thing in the world," pardon me if I just laugh.
"For God's sake," she said, "what are you drivelling on about?"
It calms me down when someone rings up and drivels on about nothing.