Related Clues:

• Bit of horseplay
• Spot for a rain drain
• Party popper?
• Put a check on
• Stop up
• Prevent from talking
• Tie down
• Stifle
• Bottleneck blocker
• Port closer
• Bit of comedy
• Stand-up delivery
• Curtail one's freedom of speech
• Stand-up standard
• Bit of trickery