knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• lurk
• lurked
• lurker
• lurkers
• lurking
• lurking-place
• lurking-places
• lurkings
• lurks
• lurries
• lurry
• lurs
• lurve
• lurves
• Lusatian
• luscious
• lusciously
• lusciousness
• lusciousnesses
• lush
• lushed
• lusher
• lushers
• lushes
• lushest