Related Clues:

• Intersection sign
• Investor's order
• 'Shake a leg!'
• Hang it up
• Word on an octagon
• Proctor's call
• 'Give it a rest!'
• Sort of sign
• Pull over
• "Let's go!"
• 'Whoa!'
• 'What are you waiting for?!'
• Terminate
• 'You can't be serious!'
• "Let's get crackin'!"