gab·ble 
(găbəl)
(găbəl)v. gab·bled, gab·bling, gab·bles
v.intr.
1. To speak rapidly or incoherently; jabber.
2. To make rapid, low muttering or quacking sounds, as a goose or duck.
v.tr.
To utter rapidly or incoherently.
n.
1. Rapid, incoherent, or meaningless speech.
2. The low muttering sound of a goose or duck.
[Probably frequentative of GAB.]
gabbler n.