The meaning of the Acronym KO is...

KO is

• Kills Others

More Meanings For KO:

• Knowledge Object
• Kiss Off
• Killer Offspring
• Knight Online
• Karatsuba Ofman
• Kubler Oppeneer
• Kronus Out
• Koal Overlord
• Kills Odors
• Katherine Olympia
• Kompletely Owns
• Karvaiset Orangit
• Knocking Out
• Killed Off
• Kelli Owens

KO is also in:

• Botany
• Chat
• General
• Hobbies
• Unfiled