Related Clues:

• Terse bit of advice
• 'Whoa!'
• Terminate
• Watch your step!
• Layover
• 'Cool it!'
• Flag down
• Grind to a halt
• Telegram "period"
• Tops a different way?
• "Stop it!"
• Octagonal traffic sign
• Call a halt to
• "Freeze!"
• Reservation