#1
whirr n. [
whir, whirring, birr] sound of something in rapid motion; "whir of a bird's wings"; "the whir of the propellers"
. wn #2
whirr v. [
whizz, whiz, whir, birr, purr] make a soft swishing sound; "the motor whirred"; "the car engine purred"
. wn #3
whirr v. [
churr] make a vibrant sound, as of some birds
. wn