Related Clues:

• Sound of thunder
• Give a hand?
• Keep time manually
• Storm sound
• What fans do
• Keep time, in a way
• Hand-to-hand contact
• Explosive sound
• Clean, as erasers
• React to an act
• Reward the performance
• Show approval, in a way
• Burst of thunder
• React to a good act
• Mark time, in a way