Related Clues:

• ''Over here!''
• ''Hey, over here!''
• 'Hey you!'
• Whispered sound
• Pay attention
• Be attentive
• Street peddler's opener?
• Attention getter
• Attention-getting sound
• Pay heed
• Slangy hello
• ''Hey, bud!''
• Cousin of 'ahem'
• ''Hey, Mac!''
• Call for attention