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English word:    

whirr

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whirr in WordNet English dictionary

noun
  1. sound of something in rapid motion
    "whir of a bird's wings"; "the whir of the propellers"
    whir  whirr  whirring  birr 
verb
  1. make a soft swishing sound
    "the motor whirred"; "the car engine purred"
    whizz  whiz  whirr  whir  birr  purr 
  2. make a vibrant sound, as of some birds
    churr  whirr 
WordNet Lexical Database v3.0, © 2006 Princeton University


whirr in English Wiktionary

 
  1. (verb) To move or vibrate (something) with a buzzing sound.
  2. (verb) (intransitive) To make a sibilant buzzing or droning sound.
  3. (verb) (transitive) To cause (something) to make such a sound.
  4. (noun) A sibilant buzz or vibration; the sound of something in rapid motion.
  5. (noun) A bustle of noise and excitement.
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