To make a low, continuous, vibrating sound expressing contentment, especially as cats do. Can also describe similar soothing sounds from engines or machines.
Imitative word from the 16th century, directly mimicking the sound cats make. Found in similar forms across many languages (French ronronner, German schnurren), suggesting universal human recognition of this distinctive feline sound.
Cat purring isn't just adorable - it's therapeutic! The vibrations occur at frequencies (20-50 Hz) that promote bone healing and reduce pain in both cats and humans. Some scientists think cats evolved purring as a self-healing mechanism.
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