knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• rubatos
• rubbed
• rubber
• rubber band
• rubber bands
• rubber bullet
• rubber bullets
• rubber cement
• rubber cements
• rubber check
• rubber cheque
• rubber cheques
• rubber chicken circuit
• rubber chicken circuits
• rubber-cored
• rubbered
• rubber goods
• rubberier
• rubberiest
• rubberiness
• rubbering
• rubberise
• rubberised
• rubberises
• rubberising