It's meaningless chatter, or the soothing sound of a brook as it flows over stones
[DOC] [TLE] Babble dictionary definition | babble defined - YourDictionary [PAR] babble definition: The definition of babble is words or sounds that are not ... much
; blab; to make a low, bubbling sound, as a brook does when flowing over stones 
... confused, incoherent talk or vocal sounds; foolish or meaningless talk; a low,... [DOC] [TLE] That creeking sound - The Atlantic [PAR] Aaron Fleisher, of Normal, Ill., writes: "What is the word for the sound a creek or ... 
1. to flow with curling or rippling motion, as a shallow stream does over stones.