whirring

Từ điển Oxford Learners Wordfinder Dictionary

I - noun

sound of something in rapid motion (Freq. 2)
- whir of a bird's wings
- the whir of the propellers
• Syn:
whir, whirr, birr
• Derivationally related forms:
birr (for: birr), whir, whirr (for: whirr), whir (for: whir)
• Hypernyms:
sound

II - adjective

like the sound of rapidly vibrating wings
• Similar to:
noisy