(~s, burbling, ~d)
1.
If something ~s, it makes a low continuous bubbling sound.
The water ~d over gravel...
The river gurgled and ~d.
VERB: V prep, V
2.
If you say that someone is burbling, you mean that they are talking in a confused way.
He ~d something incomprehensible...
Key ~d about the wonderful people who contribute to tourism...
He ~s on about freedom.
VERB: V n, V about n, V on about n, also V that, V with quote