1. To talk in a very foolish or silly way: Greg asked, "Did you notice how that politician driveled on and on about what he will do for the economy of our country?"

Janet was constantly driveling on about her trip to Paris during the summer which absolutely bored her classmates.

2. To drool or to slobber: The baby girl sat driveling in her high chair while her mother was feeding her.

The dog on the TV show was driveling a great deal of saliva that was dripping from its mouth.