Related Clues:

• Sound of a heavy blow
• Dull heavy sound
• Low dull sound as of blow
• A heavy dull sound
• "Kapow!"
• Relative of "Pow!"
• What may come from a sock?
• Blast sound
• Punch accompanier
• 'Thwack!'
• Whack!
• Watch worn on top of knitted cuff
• Dull report in Thursday's daily's leader
• Blow with flat object
• Sound of heavy blow