Related Clues:

• Sound before 'Your fly's open'
• 'Over here'
• Start of a whispered comment, perhaps
• Subtle 'yo!'
• ''You there!''
• 'Hey . . . over here!'
• Quiet bid
• Sibilant signal
• Silent acknowledgment
• Tacit agreement
• Subtle alert
• Relative of ''ahem''
• Soft "Yo! Over here!"
• Gesture of assent
• Quiet okay