Synonyms: whir, whirr, whirring, birr
Definition: sound of something in rapid motion
Usage: whir of a bird's wings; the whir of the propellers
Similar words: sound
Definition: the sudden occurrence of an audible event
Usage: the sound awakened them
Synonyms: whirring
Definition: like the sound of rapidly vibrating wings
Similar words: noisy
Definition: full of or characterized by loud and nonmusical sounds
Usage: a noisy cafeteria; a small noisy dog