Related Clues:

• Warning signal
• ''Hey, over here!''
• Get someone's attention two blocks over
• Call out
• Cheerleader's practice
• Time zone letters
• 'Hey you!'
• Interrupter's word
• Whispered sound
• ''Watch it, buster!''
• Traffic stopper
• L.A. setting
• Street peddler's opener?
• Winter clock setting in S.F.
• Attention getter