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Kill(ed) on sight. Used for a person/group of persons who are banned from an area. If this ban is broken, they will be killed on sight.
U're on KOS. If u ever come here again u will be killed on sight.
K O S by Mau August 2, 2005
Words you can keep
A gang in LA called "Kappin Off Suckas".
yo K.O.S is hittin the streets
K O S by hollaAtdis August 11, 2006
Related Words
a fake ghetto made by the town of westerly. it contains fake ghetto from the unghetto town of westerly
geeze, that KOS is at it again, goin down that street with the baby blue.
K O S by jessie t August 12, 2006
Kill On Sight. From games such as World of Warcraft, etc. Means basically marked for death just by showing your face.
Damn, they KOS'd me!
Look out, I think we're KOS!
K.O.S. by offkilter March 23, 2005
gaming term meaning Kill On Sight. Basically a wanted add if directed at a single player. Or it can be used to describe another team you would rather kill instead of another.
Dude, he's K.O.S.
ignore green blues are k.o.s
Keep On Striven - One Step at a time never give up. Change the world K.O.S
I Keep it K.O.S Keep On Striven i will never stop pursuing my dreams
K.O.S by Mister K.O.S December 19, 2016
Knowledge of self. off of the mos def and talib kweli are black star album.
life without knowledge is death in disguise
More from Urban Dictionary

Salad Days 

green inexperienced youthful judgement and cold blooded execution of those judgements.

Rashness with little concern of consequence.

Antony and Cleopatra. William Shakespeare

"My salad days,
When I was green in judgment, cold in blood."

- William Shakespeare, Antony and Cleopatra, 1.5
"How did you end up in jail?"

"Salad days, 'nuf said."
Salad Days by GilbyRFC0 October 7, 2011
Word of the Day on August 28, 2026

age gate 

An absolutely foolproof way to keep minors from viewing content deemed "too mature" for them to watch.
Billy: "So I was trying to watch some videos for an M rated game, and I ran into an age gate, so I put in my real birthday. SOMEHOW it managed to figure out that I am 12. CURSE YOU AGE GATE!!!"

Bill: "Fucking age gate! *quick scroll* THERE! I was born on January 1, 1904. Fuck you age gate."
age gate by Banja January 7, 2011
Word of the Day on August 27, 2026

board chow 

A)
The Crud that collects under the keys in a keyboard. Usually more severe in the keyboards of programmers and webmasters as they tend to spend a lot of time at the the computer and thus eat at their desk. Mainly affecting IBM Model M (clicly) style boards.

B)
Can also be used to gross out Non-Techie people
A)
Bill: want to go to the club?
Bob: No, I've got to clean out my board chow, keys are starting to stick.

B)
Bill: Want to go out to get a bite?
Bob: No, i am just going to have some of my board chow/
Bill: Whats' that?
Bob: The food scraps that collect in my keyboard; Want some?
Bill: *GAG* *HURL* *GAG*
board chow by BinaryHackerMan September 3, 2007
Word of the Day on August 26, 2026

young pup 

a young person, a young adult in their late teens/early 20s.
Ah, you're just a young pup at 23!
young pup by the dog May 30, 2006
Word of the Day on August 25, 2026
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