The happy sound a relaxed cat makes is a purr. A purr is low and fluttery, and you can feel it vibrating in the cat's body.

Your pet cat purrs, and so do some of her larger relatives, like the puma and the bobcat, as well as the cat-like animal called a genet, raccoons, badgers, tapirs, and even guinea pigs. Scientists aren't entirely sure how a cat purrs, but they do know that felines can either purr or roar, but not both (lions, for example, don't purr). They also suspect that a purr evolved as communication between mother cats and nursing kittens.

Definitions of purr
  1. noun
    a low vibrating sound typical of a contented cat
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    type of:
    the sudden occurrence of an audible event
  2. verb
    indicate pleasure by purring; characteristic of cats
    synonyms: make vibrant sounds
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    type of:
    resonate, vibrate
    sound with resonance
  3. verb
    make a soft swishing sound
    “the car engine purred
    synonyms: birr, whir, whirr, whiz, whizz
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    type of:
    go, sound
    make a certain noise or sound
Word Family
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