Related Clues:

• Hushed ''Hey!''
• Classroom nudge
• Sibilant call
• "Now __ this!"
• Subtle signal
• Verbal elbow?
• Subtle "Over here!"
• Start of a library volume discussion?
• "Yo, over here!"
• Hissed nudge
• Furtive "Yo!"
• ''Over here''
• Alternative to 'Yo!'
• Furtive ''Hey!''
• Soft attention getter