Related Clues:

• Gentle utterance to attract attention
• 'Hey, pal'
• Muted call
• Quiet "Check this out!"
• Indignant exclamation
• Call in place of a nudge
• Subtle summons
• 'Hey, you there'
• Sly 'Hey!'
• Sound of a polite interruption
• Secret spiller's intro
• Vowelless attention-getter
• 'I'm still in the room, y'know'
• 'Hey, mister'
• 'Ahem' relative