Related Clues:

• Kitten's call
• Tweet
• Contented sound
• Contented tabby sound
• Cat's 'please continue scratching behind my ears'
• Run perfectly
• Kittenish sound
• Hum
• What gentle strokes may produce
• Feline sound
• Sound from a sex kitten?
• Cry from a nest
• Nest noise
• Run like a charm, as an engine
• Early morning sound