KO or k.o.

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

To knock out

A knockout

• bottlers
• bottles
• bottle shop
• bottle shops
• bottle-shouldered
• bottle-slider
• bottle-sliders
• bottle store
• bottle tree
• bottle trees
• bottle up
• bottle-washer
• bottle-washers
• bottling
• bottom
• bottom dead centre
• bottom drawer
• bottom drawers
• bottomed
• bottom end
• bottom ends
• bottom feeder
• bottom feeders
• bottom fish
• break one's duck