Babble

Babble-v
1-to say something rapidly and incoherently without pausing, usually because of excitement or fear
2-to talk rapidly or at length in a way people find irrelevant
3-to make a continuous low murmuring or bubbling sound
4-to reveal something thoughtlessly or impulsively that is supposed to be secret or confidential

n
1-the sound of voices speaking too excitedly and rapidly to be heard properly
2-irrelevant chatter
3-the low continuous murmuring or bubbling sound made by weater as it flows along

Synonyms
jabber
gibber
prattle
talk nonsense
blather
chat