The meaning of the Acronym KO is...

KO is

• Kiss Off

More Meanings For KO:

• Knowledge Object
• Kiss Off
• Killer Offspring
• Knight Online
• Karatsuba Ofman
• Kubler Oppeneer
• Kronus Out
• Koal Overlord
• Kills Odors
• Katherine Olympia
• Kids Online
• Karl Otto
• Ken Odonnell
• Knocked Out
• Kill Order

KO is also in:

• Botany
• Chat
• General
• Hobbies
• Unfiled