Related Clues:

• Give the performers a hand
• Strike sharply
• Explosive noise
• Show some love, so to speak
• Exclamation point, to printers
• Give it up, so to speak
• Loud, abrupt sound
• Abrupt bit of thunder
• Smack two palms
• Sound after a bolt
• Show support
• ... thunder
• Theoretical "big" event
• Dynamite sound
• Big noise