KO or k.o.

1. Kick-off
2. Knockout
3. Knock out

To knock out

A knockout

• clay-mill
• clay-mills
• clay mineral
• claymore
• claymore mine
• claymore mines
• claymores
• claypan
• claypans
• clay pigeon
• clay pigeons
• civil deaths
• civil defence
• civil defences
• civil disobedience
• civil engineer
• civil engineering
• civil engineers
• civilian
• civilianise
• civilianised
• civilianises
• civilianising
• civilianize
• civilianized