burble
verb
[ ˈbəːb(ə)l ]
• make a continuous murmuring noise.
• "a stream burbled through the woods"
Similar:
gurgle,
bubble,
murmur,
purr,
purl,
tinkle,
whir,
drone,
rumble,
buzz,
hum,
plash,
• (of an airflow) break up into turbulence.
• "the air no longer flows smoothly over the wing but burbles and slows down, decreasing lift"
burble
noun
• continuous murmuring noise.
• "the steady burble of running water"
Origin:
Middle English (in the sense ‘to bubble’): imitative. Current senses date from the late 19th century.