Related Clues:

• Word on an octagon
• Proctor's call
• 'Give it a rest!'
• Sort of sign
• Pull over
• 'Whoa!'
• Terminate
• Makeup artist's supply item
• Layover
• 'Cool it!'
• Flag down
• Grind to a halt
• Telegram "period"
• Tops a different way?
• Octagonal traffic sign