Related Clues:

• Acknowledge your fans
• 'Are you there?'
• 'Greetings'
• Pick-up line?
• Surfer's swell
• ''Haven't you been listening?''
• -
• Acknowledge one's fans
• On top it can have a whitecap
• Phone line?
• Another rough seas feature
• Hello from a distance
• Opening remark?
• Word on many nametags
• Greeting