Related Clues:

• Stop!
• Terse bit of advice
• Terminate
• "Hold up!"
• "Awesome!"
• "Slow down!"
• 'Hold it, horse!'
• "Stop it!"
• 'Hey, stop right there!'
• It's followed by "Who goes there?"
• Horse's halter?
• "Halt, salt!"
• "Freeze!"
• Pause
• Steed stopper