knubble, nubble /nubˈl/ or knobble /nobˈl/

1. To beat with the fists
2. To knock

• pentito
• Pentium
• pentlandite
• pentlandites
• pentobarbital
• pentobarbitals
• pentobarbitone
• pentobarbitones
• pentode
• pentodes
• pentomic
• pentosan
• pentosane
• pentosanes
• pentosans
• pentose
• pentoses
• Pentothal
• Pentothal sodium
• pentoxide
• pentoxides
• pentroof
• pentroofs
• pents
• pentstemon