patter

nouns

plausible glib talk (especially useful to a salesperson)
line of gab, patter, spiel
a quick succession of light rapid sounds
"the patter of mice"; "the patter of tiny feet"
patter
is a type of (narrower)
the sudden occurrence of an audible event
"the sound awakened them"
sound

verbs

rain gently
"It has only sprinkled, but the roads are slick"
patter, pitter-patter, spatter, spit, sprinkle
make light, rapid and repeated sounds
"gently pattering rain"
patter, pitter-patter