Related Clues:

• "Hit the brakes!"
• Exclamation to a pesky sibling
• With 28-Across, like some traffic
• "Cut that out!"
• "Go no further!"
• 1-Down or 50-Across, e.g.
• Stallion or rooster
• ''Hold it right there!''
• Bull, cob or tom, e.g.
• Order on an octagonal sign
• "Hold your horses!"
• Like some bonding
• Tomcat, e.g.
• Type of bonding
• "Go no farther!"