Related Clues:

• Bailiff's bellow
• "Hey, Mister!"
• Clandestine signal
• Persian comment
• Music to an ailurophile's ears
• Surreptitious sound
• 'Check it out!'
• Pussy's cry
• "You, there!"
• "Hey, Mac!"
• Catcall?
• "Howdy!"
• Cry over spilled milk?
• Catty remark
• "Listen!"