knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• diesel
• diesel-electric
• diesel engine
• diesel engines
• cotter-pins
• cotters
• cottid
• Cottidae
• cottids
• cottier
• cottierism
• cottierisms
• cottiers
• cottise
• cottised
• cottises
• cottising
• cottoid
• cotton
• cottonade
• cottonades
• cotton belt
• cotton belts
• cotton boll
• cotton bolls