thrum

nouns

a thrumming sound

"he could hear the thrum of a banjo"

thrum

is a type of (narrower)

the sudden occurrence of an audible event

"the sound awakened them"

sound with a monotonous hum

hum, thrum

sound the strings of (a string instrument)

"strum a guitar"

strum, thrum

make a rhythmic sound

"Rain drummed against the windshield"; "The drums beat all night"

beat, drum, thrum