Related Clues:

• "Hey, over here"
• "Over here!"
• 'Hey ... over here!'
• "Beg pardon ..."
• Verbal elbow in the ribs
• Subdued attention getter
• Interjection to express doubt
• Throaty cousin of ''psst!''
• Furtive ''Hey, you!''
• Sibilant summons
• ''Hey there''
• Alternative to 50-Across
• Meaningful little cough
• 'Excuse me …'
• 'Psst' alternative