Related Clues:

• ''Cool it!''
• Telegram punctuation word
• Go no further
• Octagonal order
• "That'll do!"
• Heed a red light
• Word on a red sign
• Period in English literature
• Familiar sign
• Arresting word
• ''Hold the phone!''
• What you often do on the road
• ''Hold it!''
• Place to catch a bus
• Come to a standstill