Meaning of whirr

Definition of whirr

(noun) sound of something in rapid motion; "whir of a bird's wings"; "the whir of the propellers"
(verb) make a soft swishing sound; "the motor whirred"; "the car engine purred"
make a vibrant sound, as of some birds

Other information on whirr

WIKIPEDIA results for whirr
Amazon results for whirr