Related Clues:

• Hail at sea
• "Hey you!"
• Clearing, of sorts
• 'Hey, buddy'
• "Excuse me ..."
• Conversation opener
• Sound from an exam cheater
• "Want to hear a secret?"
• "Stop it!"
• Listen!
• Mate's greeting
• Verbal jab in the ribs
• 'You there!'
• Attention-getting call
• Shipboard shout