Related Clues:

• Acrimony
• Contented murmur
• Sound from a Burmese
• Cat or engine sound
• Cattiness
• Run smoothly, as an engine
• Run well
• Kitten's call
• Contented sound
• Contented tabby sound
• Cat's 'please continue scratching behind my ears'
• Run perfectly
• Kittenish sound
• Hum
• What gentle strokes may produce