1. makes a low continuous vibrating sound (especially of a cat when content)
2. runs smoothly and quietly (of an engine or machine)
3. speaks in a soft, low, pleased voice

1. low continuous vibrating sounds made by a cat or similar animal

Examples

• The cat purrs contentedly on my lap.
• The engine purrs like a kitten after the tune-up.
• She purrs with satisfaction at the compliment.
• The luxury car’s engine purrs quietly at the stoplight.
• I can hear the cat’s gentle purrs from across the room.
• The motor purrs smoothly without any vibration.
• He purrs sweet words in her ear.