making a continuous murmuring noise
green fields and gently burbling streams
burbling electronic sounds
endless burbling baby noises
continuous murmuring noise
somewhere nearby she could hear the burbling of a small stream
the happy burbling of a child
violent or unsteady movement of airflow affecting an aircraft
I noted some burbling and directional instability that had not been present on previous flights
(of an airflow) break up into turbulence
the air no longer flows smoothly over the wing but burbles and slows down, decreasing lift