Related Clues:

• Sort of sign
• Pull over
• 'Got it!'
• Blind man's bluff?
• Listener's response
• 'Whoa!'
• Terminate
• "Uh-huh"
• "That's clear to me"
• "Of course!"
• Layover
• 'Cool it!'
• Flag down
• "Understood!"
• Grind to a halt